JP5238466B2 - DC constant current power supply device and motor drive system using the same - Google Patents

Description

  The present invention relates to a DC constant current power supply apparatus that outputs a specified constant current regardless of whether the electromotive force of a load such as a motor is positive or negative, and that can recover regenerative energy from the load side, and a motor using the same It relates to the drive system.

  The inventor of the present application has already proposed a novel motor drive system including a DC constant current power supply device, a multiphase constant current inverter, and a multiphase constant current motor (Kaisei (registered trademark) motor) (patent). Reference 1). This motor drive system can be applied to an electric vehicle or the like.

  The DC constant current power supply device operates so as to output a DC current of a specified magnitude in a certain direction regardless of whether the electromotive force on the multiphase constant current motor side that is a load is positive or negative. Further, the DC constant current power supply device operates so as to collect regenerative power from the load side when the multiphase constant current motor as a load is braked, that is, when the load electromotive force is negative.

  The multiphase constant current inverter receives the DC constant current from the DC constant current power supply as an input, reverses the direction of the current flowing in the stator winding of the multiphase constant current motor, It has a function of supplying a rectangular wave alternating current. By providing a plurality of functions for reversing and switching the direction of the current, the number of phases can be arbitrarily selected, and the multiphase constant current inverter can supply a multiphase rectangular wave alternating current.

  In the multiphase constant current motor (Kaisei (registered trademark) motor), when receiving a multiphase rectangular wave alternating current from the multiphase constant current inverter, a rotational force is generated in the magnetic poles of the internal rotor. Conventional semiconductor motors are based on synchronous motors or induction motors driven by three-phase sine wave currents, but the multiphase constant current motors proposed by the inventor of the present application are based on direct current motors. This is a completely new type of motor in that it operates with a phase square wave alternating current.

The DC constant current power supply device used in the motor drive system as described above is configured as shown in FIG. In FIG. 25, a bridge is constituted by the semiconductor switches S ₁ , S ₂ , S ₃ , S ₄ . Each of the semiconductor switches S _{1 to} S ₄ can be composed of any one of an IGBT, a thyristor, a power transistor, and the like. These semiconductor switches S _{1 to} S ₄ are on / off controlled according to asymmetric PWM (pulse width control). Hereinafter, a bridge constituted by the semiconductor switches S _{1 to} S _{4 is referred} to as an asymmetric PWM bridge. The connection point between the semiconductor switches S ₁ and S ₃ connected in series in the asymmetric PWM bridge and the connection point between the semiconductor switches S ₂ and S ₄ connected in series are the positive (+) of the DC power supply 1. The terminal and the negative (-) terminal are connected. A connection point between the semiconductor switches S ₁ and S ₂ in the asymmetric PWM bridge is connected to the output terminal X via the reactor 2, and a connection point between the semiconductor switches S ₃ and S ₄ is connected to the output terminal Y. Further, the semiconductor switch S ₅ is in parallel connected to the asymmetric PWM bridge.

In such a DC constant current power supply, the semiconductor switches S _{1 to} S ₄ are turned on / off according to a predetermined carrier wave signal, and the on period (off period) is controlled (PWM control). In addition, one semiconductor switch pair S ₁ , S ₄ and the other semiconductor switch pair S ₂ , S ₃ on the diagonal line in the asymmetric PWM bridge do not operate symmetrically as in a normal bridge, but load In accordance with positive or negative electromotive force, each is controlled so as to operate integrally and asymmetrically. Specifically, when the load electromotive force is positive (when driving a multiphase constant current motor), one of the semiconductor switch pairs S ₁ and S ₄ operates to output a constant current from the output terminal X. A positive average voltage is output across the output terminals X and Y, and the value corresponds to the length of the ON period of the semiconductor switch pair S ₁ and S ₄ . On the other hand, when the load electromotive force is negative (during braking of the multiphase constant current motor), the other pair of semiconductor switches S ₂ and S ₃ operates and the output of the constant current is maintained from the output terminal X. Thus, a negative average voltage is output across the output terminals X and Y, and the value corresponds to the length of the ON period of the semiconductor switch pair S ₂ and S ₃ .

The semiconductor switches S ₅ constitute a circulation circuit through the reactor 2 and the subsequent stage of the multi-phase constant current inverter. The semiconductor switch pair S ₁ and S ₄ is controlled to be turned on during the off period and the semiconductor switch pair S ₂ and S ₃ are turned off. Thereby, a direct current can be supplied to the multiphase constant current inverter without interruption even during the off-period of both semiconductor switch pairs.

The controller for the DC constant current power supply controls on / off of the semiconductor switch pair S ₁ and S ₄ by a pulse signal at the carrier frequency when driving a constant current multiphase motor (Kaisei (registered trademark) motor) as a load. At the same time, the other semiconductor switch pair S ₂ , S ₃ is maintained in the OFF state. The control device controls the effective output voltage (positive voltage) so that the output current is maintained at the specified constant current value I according to the positive electromotive force of the constant current multiphase motor. Therefore, the ON period (OFF period) of the semiconductor switch pair S ₁ and S ₄ is controlled. On the other hand, at the time of braking of the constant current multiphase motor as a load, the control device switches between the control for the semiconductor switch pair S ₁ , S ₄ and the control for the other semiconductor switch pair S ₂ , S ₃ , and the semiconductor switch pair S ₁ , S ₄ is turned off, and the other semiconductor switch pair S ₂ , S ₃ is turned on / off by a pulse signal at the carrier frequency. And this control apparatus is effective output voltage (negative voltage) so that output current may be maintained at the designated constant current value I according to the negative electromotive force of the constant current multiphase motor to be braked. The on-period (off-period) of the semiconductor switches S ₂ and S ₄ is controlled to control the above.

At the time of braking of the multiphase constant current motor, the constant current I output from the output terminal X is large when the output voltage of the DC constant current power source (voltage between the output terminals X and Y) is a negative voltage. phase inverter and via a multi-phase constant current motor back to the output terminal Y, and returned to the DC power supply 100 through a semiconductor switch S _3. That is, power regeneration is performed.
Japanese Patent No. 4107614

  In the DC constant current power supply device as described above, when the load electromotive force is positive (when driving the multiphase constant current motor) and when the load electromotive force is negative (when braking the multiphase constant current motor), In the asymmetric PWM bridge, switching control of the semiconductor switch pair to be effective is necessary, and on / off at the carrier frequency and control of the pulse width are performed on the semiconductor switch pair which is effectively switched.

  As described above, since different types of control such as switching control of the semiconductor switch pair and ON / OFF of the semiconductor switch and its pulse width control are required, the control is complicated accordingly. When the positive / negative load electromotive force frequently changes, it can be difficult to control the load electromotive force.

  The present invention has been made in view of such circumstances, and provides a DC constant current power supply device that can facilitate control for maintaining the output of a specified constant current regardless of whether the load is positive or negative. The present invention also provides a motor drive system using such a DC constant current power supply device.

  The DC constant current power supply device according to the present invention includes a rechargeable DC power supply, an inverter having a first bridge composed of a plurality of switches, a DC side terminal connected to an output terminal of the DC power supply, Inverter driving means for controlling on / off of each switch of the first bridge in the inverter with a pulse signal of a predetermined period and outputting a rectangular wave AC voltage and current from the AC side terminal of the inverter, and a plurality of switches A converter for performing forward / reverse conversion operation in which an AC side terminal is connected to the AC side terminal of the inverter and is coupled to an output terminal to which a load is connected, and a load electromotive force Regardless of positive or negative and magnitude, the converter AC side terminal is connected to the AC side of the converter so that the output current is maintained in a constant direction and a specified constant value. A configuration in which a constant-current control means for controlling the output voltage by controlling the phase of relative to the rectangular wave AC voltage supplied to the child square wave alternating current appears between the output terminals.

  With such a configuration, in a state where a rectangular wave AC voltage and current are supplied from the AC side terminal of the inverter to the AC side terminal of the converter, the constant current control means generates the electromotive force of the load connected to the output terminal. Square wave AC supplied from the inverter so that the output current is maintained in a fixed direction and a specified constant value, whatever the magnitude, whether positive or negative The output voltage appearing between the output terminals is controlled by controlling the phase of the rectangular wave alternating current based on the voltage.

  The DC constant current device according to the present invention is a bridge composed of a transformer circuit connected to a commercial AC power source and outputting a sine wave AC voltage and current of a predetermined level from a secondary side terminal, and a plurality of switches. A converter that performs forward / reverse conversion operation in which an AC side terminal is connected to a secondary side terminal of the transformer circuit and is coupled to an output terminal to which a load is connected, regardless of the positive / negative and magnitude of the load electromotive force And controlling the phase of the sine wave AC current based on the sine wave AC voltage supplied from the transformer circuit to the AC side terminal of the converter so that the output current is maintained in a constant direction and a specified constant value. A constant current control means for controlling the output voltage appearing at the output terminal is provided.

  With such a configuration, the constant current control means generates a load connected to the output terminal while a sinusoidal AC voltage and current are supplied from the secondary side terminal of the transformer circuit to the AC side terminal of the converter. Whatever the magnitude of the power, whether positive or negative, is supplied from the transformer circuit so that the output current is maintained in a constant direction and a constant value indicated The phase of the sine wave alternating current with reference to the sine wave alternating voltage is controlled to control the output voltage appearing between the output terminals.

  The motor drive system according to the present invention includes a rotor made of a magnetic material in which 2n (n is an integer) convex portions are formed at equal intervals in the circumferential direction, and each of the convex portions is disposed outside the rotor. 4n magnetic poles are arranged at equal intervals so that a predetermined gap is formed, and each of the 4n magnetic poles of the stator is wound around each of the 4n magnetic poles. A switched reluctance motor having a first coil to be rotated and a second coil wound around each of the remaining magnetic poles of the 4n magnetic poles, and any of the DC constant current power supply devices described above A flip-flop circuit having a first current path and a second current path that can be switched alternately, and the first current path and the second current path of the flip-flop circuit. Flip-flop control means for alternately switching the conduction state; A DC constant current output from one output terminal of the DC constant current power supply device flows through the first coil of the switched reluctance motor through the first current path of the flip-flop circuit, and the DC A constant current flows through the second coil of the switched reluctance motor through the second current path of the flip-flop circuit, and the DC constant current flowing through the first and second coils is the DC constant current. The DC constant current power supply device, the flip-flop circuit, and the switched reluctance motor are connected so as to be fed back to the other output terminal of the current power supply device, and the flip-flop control means includes the switched reluctance motor. In accordance with the angular position of the rotor, the conduction states of the first and second current paths are alternately switched to obtain an electrical angle of 180 ° width. A rectangular wave current is alternately passed through the first and second coils, and the timing for switching the conduction state of the first and second current paths between when the switched reluctance motor is driven and when braking is applied to the rotor. The flip-flop circuit is controlled to be shifted by a rotation time of an angle corresponding to the electrical angle of 180 °.

  With such a configuration, when a switched reluctance motor is driven (in the case of positive load electromotive force), a direct current constant current (a constant direction and constant value direct current) output from one output terminal of the direct current constant current power supply device. Current) alternately flows through the first current path and the second current path of the flip-flop circuit whose conduction state is alternately switched according to the rotation angle of the rotor of the switched reluctance motor. As a result, the first coil and the second coil wound around the 4n magnetic poles of the switched reluctance motor are alternately excited according to the rotation angle of the rotor. By alternately exciting the first coil and the second coil, the magnetic poles attracting the 2n convex portions of the rotor are moved, whereby the rotor is rotated (driven). In this case, the output current from the DC constant current power supply device includes the first current path of the flip-flop circuit and the first coil of the switched reluctance motor, and the second current path of the flip-flop circuit and the switched reluctance motor. Return to the DC constant current power supply device through one of the second coils, the power consumption of the DC power supply in the DC constant current power supply device is made, or commercial AC through the transformer circuit of the DC constant current power supply device Power consumption of the power supply is made.

  During braking of a switched reluctance motor (in the case of negative load electromotive force), a negative output voltage appears between the output terminals of the DC constant current power supply device, and the output DC current value from one output terminal is kept constant. Is done. The timing for switching the conduction state of the first and second current paths of the flip-flop circuit is shifted by the rotation time of the angle corresponding to the electrical angle of 180 ° of the rotor of the switched reluctance motor, and the first and second The conduction state of the current path is alternately switched. As a result, the timing of the alternate excitation of the first coil and the second coil wound around the 4n magnetic poles of the switched reluctance motor is shifted by the rotation time corresponding to each 180 ° of the rotor electric power. The 2n convex portions of the rotor are attracted by the attractive force of each magnetic pole, and the rotor is braked. In this case, the output current from the DC constant current power supply device includes the first current path of the flip-flop circuit and the first coil of the switched reluctance motor, and the second current path of the flip-flop circuit and the switched reluctance motor. It returns to the DC constant current power supply device through one of the second coils, and the current is returned to the DC power supply in the DC constant current power supply device, or commercialized via a transformer circuit in the DC constant current power supply device. Returned to AC power (regeneration).

  The motor drive system according to the present invention includes a rotor made of a magnetic material in which 2n (n is an integer) convex portions are formed at equal intervals in the circumferential direction, and each of the convex portions is disposed outside the rotor. Thus, m stator parts in which 4n magnetic poles are arranged at equal intervals so as to form a predetermined gap are overlapped in the axial direction so that the magnetic poles are integrated at equal intervals in the circumferential direction. A stator, a first coil wound around each of the other 4n magnetic poles of each stator portion, and the remaining magnetic poles of the 4n magnetic poles. A multi-stator type switched reluctance motor having a second coil wound around each of the multi-stator switched reluctance motor and the DC constant current power supply device according to any one of claims 1 and 2, and switching of a conductive state alternately. M flip-flops having a first current path and a second current path that can be made And m flip-flop control means for alternately switching a conduction state between the first current path and the second current path of each of the m flip-flop circuits, and the m pieces in the switched reluctance motor Each of the stator portions of the flip-flop circuit is associated with one of the m flip-flop circuits, and the first current path of each flip-flop circuit and the first coil provided in the corresponding stator portion are connected in series. The m number of flip-flop circuits are connected in series in a state where the second current path and the second coil provided in the corresponding stator portion are connected in series, and the DC constant current power supply A constant DC current output from one output terminal of the apparatus is input to the first and second current paths of the first-stage flip-flop circuit connected in series, and the final-stage flip-flop is input. The DC constant current flowing through the first coil connected to the first current path of the flop and the second coil connected to the second current path is fed back to the other output terminal of the DC constant current power supply device. The DC constant current power supply device, the m number of flip-flop circuits, and the switched reluctance motor are connected, and the flip-flop control means depends on the angular position of the rotor of the switched reluctance motor. Alternately switching the conduction states of the first and second current paths in each of the m flip-flop circuits, and causing each rectangular wave current having a width of 180 ° to flow alternately to the first and second coils, The timing at which the conduction state of the first and second current paths is switched between driving and braking of the switched reluctance motor corresponds to the electrical angle of the rotor of 180 °. Configured to control the respective flip-flops to shift only the rotation time of the time.

  With such a configuration, when the multi-stator switched reluctance motor is driven (in the case of a positive load electromotive force), a DC constant current (in a fixed direction and a constant direction) output from one output terminal of the DC constant current power supply device. The first current path and the second current of each of the m flip-flop circuits whose conduction states are alternately switched according to the rotation angle of the rotor of the multi-stator type switched reluctance motor. It flows alternately on the road. As a result, the first coil and the second coil wound around the 4n magnetic poles of each of the m stator portions of the multi-stator switched reluctance motor are alternately changed according to the rotation angle of the rotor. Excited. By alternately exciting the first coil and the second coil in each stator portion, the magnetic poles attracting the 2n convex portions of the rotor move, whereby the rotor rotates (drives). In this case, the output current from the DC constant current power supply device includes the first current path of each of the m flip-flop circuits, the first coil of the multiple stator switched reluctance motor, the second current path, and the multiple current. Returning to the DC constant current power supply device through one of the second coils of the stator type switched reluctance motor, the power consumption of the DC power supply in the DC constant current power supply device is made, or the DC constant current power supply device The power consumption of the commercial AC power supply is made through the transformer circuit.

  When braking a multi-stator type switched reluctance motor (in the case of negative load electromotive force), a negative output voltage appears between the output terminals of the DC constant current power supply, and the output DC current value from one output terminal Is kept constant. The timing for switching the conduction state of the first and second current paths of each of the m flip-flop circuits is shifted by the rotation time of an angle corresponding to the electrical angle of 180 ° of the rotor of the switched reluctance motor. And the conduction state of the second current path is alternately switched. As a result, the timing of alternating excitation of the first coil and the second coil wound around the 4n magnetic poles of each of the m stator portions of the multi-stator switched reluctance motor rotates with respect to the driving time. The rotor is deviated by the rotation time corresponding to the electrical angle of 180 °, and the 2n convex portions of the rotor are attracted by the attracting force of each magnetic pole, and the rotor is braked. In this case, the output current from the DC constant current power supply device includes the first current path of each of the m flip-flop circuits and the first coil of the switched reluctance motor, and the second current path and the first of the switched reluctance motor. 2 returns to the DC constant current power supply device through one of the coils, and the electric power is returned to the DC power supply in the DC constant current power supply device, or commercial AC through a transformer circuit in the DC constant current power supply device. Returned to power (regeneration).

  According to the DC constant current power supply device of the present invention, each switch of the bridge of the converter is always connected from the inverter regardless of the positive / negative of the load electromotive force without performing the switching control of the switch element according to the positive / negative of the load electromotive force. In order to maintain the output of a constant current, it is only necessary to control the phase of the rectangular wave alternating current with respect to the supplied rectangular wave alternating voltage so that the output current is maintained in a constant direction and a specified constant value. Control can be made easier.

  In addition, according to the motor drive system of the present invention, a motor drive system using a switched reluctance motor that can efficiently perform power regeneration can be realized.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 shows a basic configuration of a motor drive system according to an embodiment of the present invention. FIG. 1 shows an example in which a motor drive system is used in a vehicle (for example, an electric vehicle).

  In FIG. 1, a motor drive system mounted on a vehicle includes a DC constant current power supply device 10, a constant current flip-flop circuit 20, and a constant current flip-flop type reluctance motor 30 (switched reluctance motor). The constant current flip-flop type reluctance motor 30 is a power source of the vehicle, and the rotational force is transmitted to the left and right wheels (drive wheels) via the differential gear 40. This vehicle is equipped with a mechanical brake 50 having a known structure.

  The DC constant current power supply device 10 supplies a DC current (DC constant current) of a certain magnitude specified in a certain direction regardless of whether the electromotive force on the constant current flip-flop type reluctance motor 30 side, which is a load, is positive or negative. Operates to output. Further, the DC constant current power supply device 10 operates to collect regenerative power from the load side when the constant current flip-flop type reluctance motor 30 as a load is braked, that is, when the load electromotive force is negative. .

  The constant current flip-flop circuit 20 receives a DC constant current from the DC constant current power supply device 10 described above, and alternately outputs a rectangular wave current to two sets of coils of a constant current flip-flop type reluctance motor 30 having a structure to be described later. The function of supplying That is, the constant current flip-flop circuit 20 outputs a two-phase rectangular wave current and supplies it to the constant current flip-flop type reluctance motor 30.

  Although the detailed structure of the constant current flip-flop type reluctance motor 30 will be described later, when the two-phase rectangular wave current supplied from the constant current flip-flop circuit 20 is received, the two adjacent stator magnetic poles become the rotor. Magnetized alternately in synchronization with the rotation. A rotational force is generated in the rotor by an attractive force generated by the two adjacent stator magnetic poles.

  In a conventional motor drive system using a switched reluctance motor, a three-phase PWM inverter inputs a constant voltage from a DC constant voltage power source and generates a pseudo sine wave or a rectangular wave current having an electrical angle of 120 ° width. Supplying to switched reluctance motors. A motor drive system using such a conventional switched reluctance motor has a torque applied to the excitation magnetic pole due to various relations such as a direct current constant voltage power supply, a large reactance of the excitation coil and the number of excitation poles, and a relation with the supplied power. It is difficult to effectively supply current to the exciting coil at the timing when it occurs. In addition, the conventional motor drive system using the switched reluctance motor cannot make the current flowing through the exciting coil zero at the timing when it should be zero, and thus generates unwanted resistance torque. Furthermore, in a motor drive system using a conventional switched reluctance motor, when regenerative power is generated, a method for effectively taking out the regenerative power has not been found, and effective regenerative braking is performed. I could not.

  On the other hand, in the motor drive system according to the present embodiment, the constant current flip-flop circuit 20 configured by a semiconductor switch converts the output current of the DC constant current power supply device 10 into the constant current flip-flop type reluctance motor 30. Torque is generated in the rotor by alternately allocating to the excitation coils configured in two phases so as to synchronize with the rotation of the rotor. With such a configuration, at the timing when torque is generated, the design maximum current is virtually instantaneously supplied to the exciting coil, and at the timing when the generation of torque is finished, the current flowing through the exciting coil is instantaneously zero. Thus, useless repulsive torque does not occur. In addition, without changing the direction of the output current of the DC constant current power supply device 10, the timing of distribution to the exciting coil is shifted by 180 ° to make the load electromotive force negative, so that the power regeneration in a natural form is achieved. Is done. As a result, regenerative braking is possible until the motor is stopped, and the energy recovery efficiency is high. Since regenerative braking is possible in this way, in a vehicle (electric vehicle) as shown in FIG. 1 equipped with this motor drive system, it is not necessary to operate the mechanical brake 5 during normal operation. Can be used in a limited manner, such as when the vehicle is locked or when an emergency occurs.

  Hereinafter, details of the motor drive system will be described.

  FIG. 2 is a cross-sectional view showing a state in which the constant current flip-flop type reluctance motor 30 is cut in a direction perpendicular to the rotation axis thereof. In FIG. 2, the constant current flip-flop type reluctance motor 30 has a two-phase four-pole configuration, and has a structure in which a rotor 31 is rotatably provided in a cylindrical stator 32. The rotor 31 has a structure in which a rotating iron core 313 that is a magnetic material is rotatably supported by a rotating shaft 312, and two protrusions (hereinafter referred to as rotating members) that extend in parallel to the rotating shaft 312 on the outer peripheral surface of the rotating core 313. 313a and 313b are arranged at equal intervals in the circumferential direction (180 ° angular intervals).

  The stator 32 surrounding the rotor 31 has a structure in which four stator magnetic poles 321a, 321b, 321c, and 321d are formed on the inner peripheral surface of a cylindrical yoke 321 at equal intervals in the circumferential direction (90 ° angular intervals). It has become. The stator 32 and the rotor 31 are formed such that a predetermined gap is formed between the tip surfaces of the stator magnetic poles 321a, 321b, 321c, and 321d and the tip surfaces of the rotor convex poles 313a and 313b of the rotor 31. The relative positional relationship of is set.

  In the stator 32, excitation coils 322a and 322b are provided in the magnetic poles 321a and 321c arranged every other one of the four stator magnetic poles 321a, 321b, 321c, and 321d, and the magnetic flux is directed in the direction from the fixed magnetic pole 321a toward the fixed magnetic pole 321c. The exciting coils 322a and 322b are connected in series. Hereinafter, the excitation coils 322a and 322b connected in series are referred to as an A-phase coil 322 (first coil). Further, excitation coils 323a and 323b are wound around the remaining fixed magnetic poles 321b and 321d so that a magnetic flux is formed in a direction from the fixed magnetic pole 321b toward the fixed magnetic pole 321d, and the excitation coils 323a and 323b are connected in series. Yes. Hereinafter, the excitation coils 323a and 323b connected in series are referred to as a B-phase coil 323 (second coil).

  The constant current flip-flop circuit 20 is configured as shown in FIG.

  In FIG. 3, the constant current flip-flop circuit 20 includes a first current path 210 and a second current path 220 that are connected to one output terminal X of the DC constant current power supply device 10 and extend in parallel. ing. In the first current path 210, a first switching element 211, a diode 212, and a diode 213 are connected in series. The directions of the cathodes and anodes of the diodes 212 and 213 are determined so that the output current from the output terminal X of the DC constant current power supply device 10 flows through the first current path 210. In the second current path 220, the second switching element 221, the diode 222, and the diode 223 are connected in series. The direction of the cathode and anode of each of the diodes 222 and 223 is set so that the output current from the output terminal X of the DC constant current power supply device 10 flows through the second current path 220 as in the case of the first current path 210. It has been decided. A commutation capacitor 230 is connected between the connection point of the two diodes 212 and 213 in the first current path 210 and the connection point of the two diodes 222 and 223 in the second current path 220. Note that each of the first switching element 211 and the second switching element 221 can be configured using a semiconductor switch such as an IGBT, a thyristor, or a power transistor.

  The A-phase coil 322 (excitation coils 322a and 322b in FIG. 2) of the constant current flip-flop type reluctance motor 30 is connected in series to the first current path 210 (diode 213) in the constant current flip-flop circuit 20. Yes. In addition, a B-phase coil 323 (excitation coils 323a and 323b in FIG. 2) of the constant current flip-flop type reluctance motor 30 is connected in series to the second current path 220 (diode 223). The A-phase coil 322 and the B-phase coil 323 are further connected to the other output terminal Y of the DC constant current power supply device 10. As a result, the DC constant current output from one output terminal X of the DC constant current power supply device 10 is converted into the first current path 210 (first switching element 211, diodes 212, 213) of the constant current flip-flop circuit 20, and Through the A-phase coil 322 of the constant current flip-flop type reluctance motor 30, the second current path 220 (second switching element 221, diodes 222 and 223) of the constant current flip-flop circuit 20 and the constant current flip-flop type It can be fed back to the other output terminal Y of the DC constant current power supply device 10 through the B-phase coil 323 of the reluctance motor 30.

  In the constant current flip-flop circuit 20, the first switching element 211 and the second switching element 221 are on / off controlled so as to perform a so-called flip-flop operation in which one is turned off when the other is turned on. When the first switching element 211 is on and the second switching element 221 is off, the DC constant current output from the output terminal X of the DC constant current power supply device 10 is constant through the first current path 210. The current flows through the A-phase coil 322 of the current flip-flop type reluctance motor 30 and returns to the other output terminal Y of the DC constant current power supply device 10. On the other hand, when the first switching element is OFF and the second switching element 221 is ON, the DC constant current output from the output terminal X of the DC constant current power supply device 10 passes through the second current path and is a constant current flip-flop. The current flows through the B-phase coil 323 of the reluctance motor 30 and returns to the other output terminal Y of the DC constant current power supply device 10.

  As described above, in the constant current flip-flop circuit 20, the first switching element 211 and the second switching element 221 are alternately turned on and off, whereby the A-phase coil 322 and the B-phase of the constant-current flip-flop type reluctance motor 30 are operated. A rectangular wave current having a DC constant current value I from the DC constant current power supply device 10 as a peak value flows through the coil 323.

  Note that the commutation capacitor 230 switches the first switching element 211 and the second switching element 221 to switch from the state in which the current flows in the A-phase coil 322 to the state in which the current flows in the B-phase coil 323. This is to prevent an overvoltage from occurring when switching from a state in which a current flows through the B-phase coil 323 to a state in which a current flows through the A-phase coil 322. The diodes 212, 213, 222, and 223 assist the charging operation of the commutation capacitor 230.

In the constant current flip-flop type reluctance motor 30, the magnetic energy (1 / 2LI ² ) of each exciting coil (L: reactance of the exciting coil, I: current of the exciting coil) is once transferred to the commutation capacitor 230 by electrostatic energy ( 1 / 2CV ² ) (C: capacitance of capacitor 230, V: charging voltage of capacitor 230). Here, when the capacitance of the capacitor 230 is reduced, the commutation time is shortened while the overvoltage increases. Further, when the capacitance of the capacitor 20 is increased, the overvoltage is reduced while the commutation time is increased. From such a relationship, the capacitance of the capacitor 230 is determined so that the overvoltage and the commutation time have appropriate values.

  The flip-flop control circuit 60 performs on / off control of the first switching element 211 and the second switching element 221 of the constant current flip-flop circuit 20. Specifically, the flip-flop control circuit 60 includes angle position information indicating the angular position of the rotor 31 in the constant current flip-flop type reluctance motor 30 (for example, an angle sensor provided in the constant current flip-flop type reluctance motor 30). (Signal from (not shown)) is input, and an operation signal for alternately turning on / off the first switching element 211 and the second switching element 221 is output based on the angular position information. The flip-flop control circuit 60 inputs a braking command (for example, information based on an accelerator off operation or a brake pedal operation in the vehicle), and sets the on / off timing of the constant current flip-flop type reluctance motor 30. The rotor 31 is shifted from the driving timing by an amount of time for rotating the angle corresponding to 180 degrees of electricity.

  As described above, the rectangular wave current alternately flows through the A-phase coil 322 (see the excitation coils 322a and 322b shown in FIG. 2) and the B-phase coil 323 (see the excitation coils 323a and 323b shown in FIG. 2), Rotational torque is generated in the rotor 31 of the constant current flip-flop type reluctance motor 30. 4A to 4E schematically show the principle of generating a rotational torque in the rotor 31 when the constant current flip-flop reluctance motor 30 is driven. 4A to 4E, the rotor convex pole 313 a of the rotor 31, the stator magnetic poles 321 a and 321 b of the stator 32, and the A-phase coil 322 are configured in the constant current flip-flop type reluctance motor 30 shown in FIG. 2. The excitation coil 322a and the excitation coil 323a constituting the B-phase coil 323 are shown in a linear array.

  For example, as shown in FIG. 4A, a rectangular wave current flows through the exciting coil 322a constituting the A-phase coil 322 (indicated by hatching that the rectangular current is flowing. The same applies to FIGS. 4A to 4E). In a state where 321a is magnetized (when the first switching element 211 in the flip-flop circuit 20 is on and the second switching element 221 is off), the rotor convex pole 313a is attracted to the stator magnetic pole 321a. Become.

At this timing, the flip-flop control circuit 60 switches off the first switching element 211 of the flip-flop circuit 20 and switches on the second switching element 221 of the circuit. As a result, a transition is made from the state in which the rectangular wave current flows through the excitation coil 322a constituting the A phase coil 322 to the state in which the rectangular wave current flows through the excitation coil 323a constituting the B phase coil 323, as shown in FIG. 4B. To do. At this time, the rotation direction front end portion of the rotor salient pole 313a is at position P _1. Hereinafter, the position of the rotation direction tip of the rotor convex pole 313a is defined as the position of the rotor convex pole 313a. When the exciting coil 323a is excited by the rectangular wave current and the stator magnetic pole 321b is magnetized, the rotor convex pole 313a facing the stator magnetic pole 321a is attracted to the adjacent stator magnetic pole 321b.

By the rotor salient pole 313a is attracted to the stator poles 321b, the rotation torque acts on the rotor 11, the rotor salient pole 313a which was in position P _1, as shown in FIGS. 4C and 4D, The rotor 11 is rotated so as to sequentially go to the positions P ₂ and P ₃ and the stator magnetic pole 321b (see arrows). As shown in FIG. 4E, when the stator convex pole 313a faces the magnetized fixed magnetic pole 321b, that is, the rotor 31 is positioned at the position P ₁ where the rotor convex pole 313a is shown in FIG. 4B. When the angle (physical angle) corresponding to the electrical angle of 180 ° is rotated by 90 ° (when the rotor convex pole 313a is at the position P4), the flip-flop control circuit 60 causes the flip-flop circuit 20 to The first switching element 211 is turned on, and the second switching element 221 of the same circuit is turned off. Then, similarly to the above, the fixed magnetic pole 321c (FIG. 2) in which the rotor magnetic pole 313a facing the stator magnetic pole 321b is magnetized by the excitation coil 322b constituting the A-phase coil 322 adjacent to the stator magnetic pole 321b. The rotational torque acting on the rotor 11 by being sucked by the reference) is maintained. Thereby, the rotor 11 further rotates so that the rotor convex pole 313a is directed from the stator magnetic pole 321b to the stator magnetic pole 321c. Hereinafter, in the same manner, the alternating current to the A-phase coil 322 and the B-coil 323 of the constant current flip-flop type reluctance motor 30 by the on / off operation of the first switching element 211 and the second switching element 221 in the flip-flop circuit 20 is changed. With the supply of the rectangular wave current, the stator magnetic poles (321a to 321d) that attract the rotor salient poles 313a (313b) of the rotor 11 are sequentially shifted to maintain the rotational torque with respect to the rotor 11. As a result, the rotor 11 rotates (drive of the constant current flip-flop type reluctance motor 30).

  The operation during driving of the constant current flip-flop type reluctance motor 30 will be described in detail as follows.

In the driving of the constant-current flip-flop reluctance motor 30 described above, the time transition of the electromotive force of the B-phase coil 323 excited between the state shown in FIG. 4B and the state shown in FIG. 4E is shown in FIG. The time transition of the torque of the constant current flip-flop reluctance motor 30 is as shown in FIG. In FIG. 5, t _P1 , t _P2 , t _P3 , and t _P4 on the horizontal axis indicate that the rotor salient pole 313a is positioned at positions P ₁ , P ₂ , P ₃ , P ₄ as shown in FIGS. The time to reach is shown.

In the period from the state shown in FIG. 4B to the state shown in FIG. 4C (period from time t _P1 to time t _P2 ), the DC constant current I flows through the excitation coil 323a, but the rotor salient pole 313a is excited. Since the coil 323a is not opposed to the wound stator magnetic pole 321b, the exciting coil 323a is in the same state as the air-core coil, and substantially no magnetic flux is generated in the stator magnetic pole 321b. Further, a voltage drop (resistance drop) equal to the product RI of the DC resistance R and the DC constant current I is generated in the exciting coil 323a.

On the other hand, in the period from the state shown in FIG. 4C to the state shown in FIG. 4E (period from time t _P2 to time t _P4 ), the rotor convex pole 313a and the stator magnetic pole 321b around which the exciting coil 323a is wound are provided. The stator magnetic poles 321b are at least partially opposed to each other, and a magnetic flux approximately proportional to the area of the opposed portion is generated. Magnetic flux generated in the fixed magnetic pole 321b is smallest at time t _P1 of the rotor salient pole 313a is at position P _1, and gradually in the course of the rotor salient poles 313a are sequentially moved to a position P _2, P _3, P ₄ To increase. An electromotive force E ₁ is generated in the B-phase coil 323 having the exciting coil 323a wound around the stator magnetic pole 321b according to Faraday's law.

If the lateral speed of the rotor convex pole 313a in FIGS. 4B to 4E is constant, the area of the facing portion between the rotor convex pole 313a and the stator magnetic pole 321b increases in proportion to time. The electromotive force E ₁ generated in the coil 323 is constant. The polarity of the electromotive force E ₁ is opposite to the direction of the DC constant current I.

While the electromotive force E ₁ is generated in the exciting coil 323a constituting the B-phase coil 323, the second switching element 221 of the flip-flop circuit 20 is turned on so that the DC constant current I flows to the exciting coil 323a. Thus, a load electromotive force E ₁ as shown in FIG. 5A is applied to the DC constant current power supply device 10. The DC constant current power supply apparatus 10 supplies power obtained by multiplying the load electromotive force E ₁ shown in FIG. 5A by the DC constant current I to the exciting coil 323a in the constant current flip-flop type reluctance motor 30 as a load. By doing so, the power of I × E ₁ excluding the power due to the resistance drop RI becomes the rotational output of the constant current flip-flop type reluctance motor 30.

Further, during the period from the state shown in FIG. 4C to the state shown in FIG. 4E, torque is generated in the constant current flip-flop type reluctance motor 30 as shown in FIG. This torque τ1 is a constant value proportional to the load electromotive force E ₁ .

  On the other hand, the electromotive force waveform of the exciting coil 322a constituting the A-phase coil 322 and the torque waveform generated by the power supply to the exciting coil 322a are shown in the electromotive force waveform of FIG. 5A and FIG. The torque waveform is shifted by the time for which the rotor 11 rotates an angle corresponding to an electrical angle of 180 °.

  In the above description, the rotor convex pole 313a, the stator magnetic pole 321a wound with the exciting coil 322a, and the stator magnetic pole 321b wound with the exciting coil 323a are described. The same applies to the rotor convex pole 313b, the stator magnetic pole 321c around which the exciting coil 322b is wound, and the stator magnetic pole 321d around which the exciting coil 323b is wound.

  Next, the principle of torque generation during regenerative braking of the constant current flip-flop type reluctance motor 30 will be described with reference to FIGS. 6A to 6E. 6A to 6E are compared with the state transitions shown in FIGS. 4A to 4E, the timing at which the DC constant current flows through the exciting coils 322a and 323a corresponds to the rotor 11 having an electrical angle of 180 °. The angle (physical angle) is shifted by 90 °.

For example, as shown in FIG. 6A, a rectangular wave current flows through the exciting coil 323a constituting the B-phase coil 323 (indicating that the rectangular current is flowing is indicated by diagonal lines. The same applies to FIGS. 6A to 6E). 321b is magnetized (when the first switching element 211 in the flip-flop circuit 20 is off and the second switching element 221 is on), and the rotor convex pole 313a of the rotating rotor 11 faces the stator magnetic pole 321a. In this state, the movement (see arrow) continues toward the stator magnetic pole 321b. At the timing when the state shown in FIG. 6A is reached, the flip-flop control circuit 60 turns on the first switching element 211 of the flip-flop circuit 20 and turns off the second switching element 221 of the circuit. As a result, a transition is made from the state in which the rectangular wave current flows through the excitation coil 323a constituting the B phase coil 323 to the state in which the rectangular wave current flows through the excitation coil 322a constituting the A phase coil 322 as shown in FIG. 6B. To do. At this time, the rotor salient pole 313a (rotation direction front end portion) is in a position P ₁ directly facing the stator pole 321a.

When the first switching element 211 is turned on, the exciting coil 322a is excited to magnetize the stator magnetic pole 321a, and a force attracted to the stator magnetic pole 321a is applied to the rotor convex pole 313a. This force becomes a direction opposite to the rotation direction of the rotor 11, and becomes a braking force for the rotor 11. Thus the rotation of the rotor 11 while the braking force acts on the rotor 11 is continued, the rotor salient pole 313a which was in position P _1, as shown in FIGS. 6C and 6D, the position P _2, P ₃ and the rotor 11 turn sequentially toward the stator magnetic pole 321b (see arrow).

6E, when the rotor convex pole 313a faces the stator magnetic pole 323a, that is, the rotor 31 has the rotor convex pole 313a at the position P ₁ shown in FIG. 6B. Is turned by 90 ° (physical angle) corresponding to an electrical angle of 180 ° (when the rotor convex pole 313a is at the position P ₄ ), the flip-flop control circuit 60 performs the first switching of the flip-flop circuit 20. The element 211 is turned off, and the second switching element 221 of the same circuit is turned on. Thereafter, the exciting coil 323a constituting the B-phase coil 323 is excited to magnetize the stator magnetic pole 321b, and the attractive force from the stator magnetic pole 321b acts on the moving rotor convex pole 313a, as described above. A braking force acts on the rotor 11 that continues to rotate.

  The operation during regenerative braking of the constant current flip-flop type reluctance motor 30 will be described in detail as follows.

During regenerative braking of the constant-current flip-flop reluctance motor 30 described above, the time transition of the electromotive force of the exciting coil 322a constituting the A-phase coil 322 excited between the state shown in FIG. 6B and the state shown in FIG. 6E is 7A, the time transition of the torque of the constant current flip-flop reluctance motor 30 is as shown in FIG. 7B. In FIG. 7, t _P1 , t _P2 , t _P3 , and t _P4 on the horizontal axis indicate that the rotor salient pole 313a is positioned at positions P ₁ , P ₂ , P ₃ , P ₄ as shown in FIGS. The time to reach is shown.

In the stator magnetic pole 321a wound with the exciting coil 322a constituting the A-phase coil 322, a magnetic flux substantially proportional to the area of the portion where the rotor convex pole 313a and the stator magnetic pole 321a face each other is generated. Therefore, magnetic flux generated in the fixed magnetic pole 321a is greatest will in time tP ₁ of the rotor salient pole 313a is at position P _1, gradually decreases in the process of transition to the position of the position _{P 2, P 3, P 4} . An electromotive force E ₂ is generated in the A-phase coil 322 having the exciting coil 322a wound around the stator magnetic pole 321a according to Faraday's law.

If the lateral speed of the rotor convex pole 313a is constant, the area of the facing portion between the rotor convex pole 313a and the stator magnetic pole 321a decreases in proportion to time, so the electromotive force E generated in the A-phase coil 322 ₂ is constant (see FIG. 7A). The polarity of the electromotive force E ₂ is the same as the direction of the DC constant current I.

While the electromotive force E ₂ is generated in the excitation coil 322a constituting the A-phase coil 322, the first switching element 211 of the flip-flop circuit 20 is turned on so that the DC constant current I flows to the excitation coil 322a. As a result, the DC constant current power supply 10 regenerates power obtained by multiplying the absolute value of the load electromotive force E _{2 by} the resistance drop RI and the DC constant current I.

In the period from the state shown in FIG. 6C to the state shown in FIG. 6E, as shown in FIG. 7B, a braking torque τ2 is generated in the rotor 11 of the constant current flip-flop type reluctance motor 30. The braking torque τ2 is a constant value proportional to the load electromotive force E _2.

  On the other hand, the electromotive force of the exciting coil 323a constituting the B-phase coil 323 and the braking torque generated by the power supply to the exciting coil 323a are shown in FIG. 7A and FIG. 7B. The braking torque is shifted by a time during which the rotor 11 rotates an angle corresponding to an electrical angle of 180 °.

  In the above description, the rotor convex pole 313a, the stator magnetic pole 321a wound with the exciting coil 322a, and the stator magnetic pole 321b wound with the exciting coil 323a are described. The same applies to the rotor convex pole 313b, the stator magnetic pole 321c wound with the exciting coil 322b, and the stator magnetic pole 321d wound with the exciting coil 323b.

  Next, the details of the DC constant current power supply device 10 will be described.

  The DC constant current power supply device 10 is configured as shown in FIG.

  In FIG. 8, the DC constant current power supply device 10 includes a DC power supply 100, a regenerative inverter 11, a constant current converter 12, a current detector 13, and a reactor element 14. The DC power supply 100 can effectively supply driving power by discharging and recover regenerative power by charging. Specifically, a battery such as a lithium ion battery, an ultra capacity, a capacitor, and the like can be used. The power storage unit is connected in parallel.

  The regenerative inverter 11 has four switches 111, 112, 113, and 114, and these switches 111 to 114 are connected in a bridge shape. Hereinafter, the bridge constituted by the switches 111 to 114 is referred to as a first bridge. The connection point between the switch 111 and the switch 112 serving as one end of the first bridge is connected to the terminal (+) of the DC power source 100 as the positive (+) DC side terminal of the regenerative inverter 11 and the other end of the first bridge. The connection point between the switch 113 and the switch 114 is connected to the terminal (−) of the DC power source 100 as the negative (−) DC side terminal of the regenerative inverter 11. The connection point between the two switches 111 and 113 connected in series in the first bridge and the connection point between the other two switches 112 and 114 connected in series are the alternating current of the regenerative inverter 11. Side terminals a and b are provided.

Each of the first four switches constituting the bridge 111, 112, the semiconductor switch S ₁ such as IGBT, S _2, S _3, S ₄ and the diode _{D 1, D 2, D 3} , D 4 Are connected in parallel. Each of the semiconductor switches S ₁ , S ₂ , S ₃ , S ₄ has unidirectional conduction characteristics, and current flows from the (+) DC side terminal to the (−) DC side terminal in the first bridge. Is connected to flow. The diodes D ₁ , D ₂ , D ₃ , and D ₄ are opposite in polarity to the corresponding semiconductor switches S ₁ , S ₂ , S ₃ , and S ₄ so that the regenerative current can be returned to the DC power supply 100 side. Connected in parallel.

The DC constant current power supply device 10 has a clock pulse generation circuit 70 (inverter driving means). The clock pulse generation circuit 70 performs on / off control of each switch 111, 112, 113, 114 (semiconductor switches S ₁ , S ₂ , S ₃ , S ₄ ) of the regenerative inverter 11 by a pulse signal having a predetermined cycle. Specifically, the clocks are set so that the two switches 111 and 114 located on one diagonal line of the first bridge and the two switches 112 and 113 located on the other diagonal line are alternately turned on and off. The pulse generation circuit 70 supplies a pulse signal to each of the switches 111 to 114 (semiconductor switches S _{1 to} S ₄ ). As a result, rectangular wave AC voltage and current are output from the AC side terminals a and b of the regenerative inverter 11. The frequency of the pulse signal from the clock pulse generating circuit 70 corresponds to the carrier frequency of the regenerative inverter 11, the capacity of the DC constant current power supply unit 10, the capacitance of the reactor element 14, the operation of each of the switching elements S ₁ to S ₄ It is determined based on design factors such as frequency performance. Since the semiconductor switches S ₁ to S ₄ diodes D ₁ to D ₄ is in the switches 111-114 are connected in parallel with opposite polarities, the direction of the ac side current, appears independently of the polarity of the rectangular wave AC voltage obtain.

  The constant current converter 12 includes four switches 121, 122, 123, and 124, and the switches 121 to 124 are connected in a bridge shape. Hereinafter, the bridge constituted by the switches 121 to 124 is referred to as a second bridge. The connection point between one of the two switches 121 and 123 connected in series in the second bridge is connected to the AC side terminal a of the regenerative inverter 11 as one AC side terminal c, and is connected in series in the second bridge. The connection point between the other two switches 122 and 124 is connected to the AC terminal b of the regenerative inverter 11 as the other AC side terminal d. In addition, a connection point between the switch 121 and the switch 122 which is one end of the output side of the second bridge is connected to one output terminal X via the reactor element 14 and the current detector 13, and the output side of the second bridge is The connection point between the switch 123 and the switch 124 at the other end is connected to the other output terminal Y.

Each of the second four switches constituting the bridge 121, 122, 123, 124, the semiconductor switch S ₁₁ such as _{IGBT, S 22, S 33, S} 44 and diodes _{D 11, D 22, D 33} , D 44 Are connected in series. Each of the semiconductor switches S ₁₁ , S ₂₂ , S ₃₃ , S ₄₄ has a unidirectional conduction characteristic, and is connected so that a current flows from the output terminal Y side to the output terminal X side in the second bridge. Has been. Also, each of the diodes D ₁₁ , D ₂₂ , D ₃₃ , D ₄₄ has a corresponding semiconductor switch S ₁₁ , so as to prevent a current from flowing from the output terminal X side to the output terminal Y side in the second bridge. connected in series _{S 22, S 33, S 44} . That is, the diodes D ₁₁ , D ₂₂ , D ₃₃ , D ₄₄ ensure the reverse breakdown voltage of the semiconductor switches S ₁₁ , S ₂₂ , S ₃₃ , S ₄₄ connected in series.

The DC constant current power supply device 10 has a constant current control circuit 80 (constant current control means). Regardless of the sign of the electromotive force of the load connected to the output terminals X and Y, the constant current control circuit 80 always outputs the output current I in a constant direction from the output terminal X to the load. as the current value to be detected is the command value each, regenerative under control of the second respective switches of the bridge 121, 122, 123 (each of the semiconductor switches _{S 11, S 22, S 33} , S 44) AC terminals a of the inverter 11, AC terminal c of the constant-current converter 12 b, by controlling the phase angle of the square wave current i _i relative to the rectangular wave AC voltage e _i supplied to d, an output terminal X, controls the output voltage E _o appearing between Y. Specifically, in the regenerative inverter 11, the on / off operation of the two switches 111 and 114 located on one diagonal line of the first bridge and the two switches 112 and 113 located on the other diagonal line alternately. the reference to the phase of the rectangular wave AC voltage e _i, in the switch 121 and 124 that is located on one of the diagonal lines of the second bridge control angle (phase angle) alpha, located on the other diagonal line, based on the switch 122 , 123 is turned on at a control angle (α + 180 °) for 180 °, the phase angle α is controlled in the range of 0 ° to 180 °, and a so-called forward / reverse conversion operation is performed. When the phase angle α is in the range of 90 ° or less (α ≦ 90 °), the forward conversion operation is performed, and the average output voltage appearing between the output terminals X and Y becomes a positive value. When the phase angle α exceeds 90 ° and is 180 ° or less (90 ° <α ≦ 180 °), the inverse conversion operation is performed, and the average output voltage appearing between the output terminals X and Y becomes a negative value. .

  The reactor element 14 smoothes the pulsating current due to the phase control in the constant current converter 12.

  A more specific operation of the DC constant current power supply apparatus 10 will be described with reference to FIGS. 9 to 22.

In each figure, a rectangular wave AC voltage e _i is supplied from the AC side terminals a and b of the regenerative inverter 11 driven by the pulse signal from the clock pulse generation circuit 70 to the AC side terminals c and d of the constant current converter 12. In this state, the rectangular wave AC voltage e _i is supplied to the AC side terminals c and d, and the rectangular wave AC is supplied from the AC side terminal c of the constant current converter 12 driven according to the control signal from the constant current control circuit 80. Current i _i is input. The phase of the rectangular wave AC current i _i is determined by the control signal (phase angle α) from the constant current control circuit 80 and is basically not affected by the rectangular wave AC voltage e _i supplied from the regenerative inverter 11.

A DC constant current is output as an output current I from an output terminal X to which a load (a constant current flip-flop type reluctance motor 30 through a constant current flip-flop circuit 20) is connected (see FIG. 3). The level of the output current I corresponds to a command value given to the constant current control circuit 80 that controls the constant current converter 12. The constant current converter 12 controlled so as to output such an output current I as a DC constant current outputs a voltage _eo (voltage before smoothing by the reactor element 14), and the voltage _eo is Smoothing by the reactor element 14 generates a DC output voltage E _o between the output terminals X and Y. The output voltage E _o is automatically adjusted by the constant current converter 12 so as to be a value obtained by adding a voltage drop caused by copper loss and semiconductor loss of the load circuit to the value of load electromotive force including polarity. The

For example, FIG. 9, so that the phase angle α of the square wave alternating current i _i relative to the rectangular wave AC voltage e _i supplied from the regenerative inverter 11 by the constant current control circuit 80 becomes zero, the constant current converter 12 illustrates a case in which the switches 121, 122, 123, and 124 of the second bridge at 12 are controlled. In this case, one switch pair 121 and 124 of the second bridge in the constant current converter 12 is turned on for a period of 180 ° at a control angle (phase angle) α = 0, and the other switch pair 122 and 123 of the second bridge. Is turned on for a period of 180 ° at a control angle α = (0 + 180 °). Then, a mode (1) in which one switch pair 111, 114 of the first bridge in the regenerative inverter 11 is turned on and one switch pair 121, 124 of the second bridge in the constant current converter 12 is turned on, The mode (2) in which the other switch pair 112, 113 of the first bridge in the inverter 11 is turned on and the other switch pair 122, 123 of the second bridge in the constant current converter 12 is turned on is one cycle. Repeated.

  In the mode (1), the current from the terminal (+) of the DC power source 100 is switched on in the regenerative inverter 11 and the AC side terminal a through the AC side terminal a as shown by the broken line arrow in FIG. Input to the constant current converter 12 from the terminal c. Then, the current input to the constant current converter 12 passes through the switch 121 that is turned on, and further passes through the reactor element 14 and the current detector 13 to be output as the output current I from the output terminal X. The output current I includes the first current path 210 (first switching element 211, diodes 212 and 213) of the constant current flip-flop circuit 20, the A-phase coil 322 of the constant current flip-flop type reluctance motor 30, and the constant current flip-flop. Of the DC constant current power supply apparatus 10 through either the second current path 220 (second switching element 221, diodes 222, 223) of the circuit 20 or the B phase coil 323 of the constant current flip-flop type reluctance motor 30. Return to the output terminal Y (see FIG. 3). The current that has returned to the output terminal Y is input to the regenerative inverter 11 from the AC side terminal b through the switch 124 that is turned on in the constant current converter 12 and the AC side terminal d. The current input to the regenerative inverter 11 returns to the terminal (−) of the DC power supply 100 through the switch 114 that is turned on.

  Further, in the mode (2), as indicated by a broken line arrow in FIG. 11, the current from the terminal (+) of the DC power source 100 passes through the switch 112 that is turned on in the regenerative inverter 11 and the AC side terminal b. Input to the constant current converter 12 from the AC side terminal d. Then, the current input to the constant current converter 12 passes through the switch 122 that is turned on, passes through the reactor element 14 and the current detector 13, and is output from the output terminal X as the output current I. This output current I returns to the output terminal Y of the DC constant current power supply apparatus 10 through the constant current flip-flop 20 and the constant current flip-flop type reluctance motor 30 as in the case of the mode (1). The current that has returned to the output terminal Y is input to the regenerative inverter 11 from the AC terminal a through the switch 123 that is turned on in the constant current converter 12 and the AC terminal c. The current input to the regenerative inverter 11 returns to the terminal (−) of the DC power supply 100 through the switch 113 that is turned on.

The operation of the DC constant current power supply apparatus 10 in the mode (1) and the mode (2) causes the rectangular wave AC current i _i from the regenerative inverter 11 to be forward-converted and its peak value as shown in FIG. A direct current having a current value I equal to is output as the output current I. Also, the rectangular wave AC voltage e _i input to the constant current converter 12 has a peak value equal to the voltage value E of the DC power supply 100, and the constant current converter 12 forward-converts the rectangular wave AC voltage e _i. and it outputs a voltage e _o which becomes equal to the peak value E. Then, the output voltage E _o of the output voltage e _o is smoothed by the output terminal X by the reactor element 14, Y voltage between E appears.

Thus, in a state where the output current I is kept constant (DC constant current), the phase angle α of the rectangular AC current i _{i based} on the rectangular AC voltage e _i from the regenerative inverter 11 is set to zero (α = 0), the output voltage E _o of the DC power supply 100 from the DC constant current power supply device 10 (constant current converter 12) becomes the maximum voltage value equal to the voltage value E of the DC power supply 100. The DC constant current I based on the output voltage E _o (= E) is used to drive the constant current flip-flop type reluctance motor 30 and the DC power supply 100 consumes E × I power (discharge). .

Further, for example, FIG. 12, as the phase angle α of the square wave alternating current i _i relative to the rectangular wave AC voltage e _i supplied from the regenerative inverter 11 by the constant current control circuit 80 is 30 °, The case where the switches 121, 122, 123, and 124 of the second bridge in the constant current converter 12 are controlled is shown. In this case, one switch pair 121, 124 of the second bridge in the constant current converter 12 is turned on for a period of 180 ° at a control angle (phase angle) α = 30 °, and the other switch pair 122, 123 is turned on for a period of 180 ° at a control angle α = (30 ° + 180 ° = 210 °). A mode (1) in which one switch 111, 114 of the first bridge in the regenerative inverter 11 is turned on and the other switch pair 122, 123 of the second bridge in the constant current converter 12 is turned on; A mode (2) in which one switch pair 111, 114 of the first bridge in the inverter 11 is turned on and one switch pair 121, 124 of the second bridge in the constant current converter 12 is turned on, and the regenerative inverter 11 Mode (3) in which the other switch pair 112, 113 is turned on and one switch pair 121, 124 of the second bridge in the constant current converter 12 is turned on, and the other switch of the first bridge in the regenerative inverter 11 The pair 112 and 113 are turned on. Second other switch pairs of the bridge 122 and 123 and a mode (4) for turning on operation is repeated a single cycle in the constant current converter 12.

  In the mode (1), the current from the terminal (−) of the DC power supply 100 is turned on in the regenerative inverter 11 and the AC side terminal b through the AC side terminal b as shown by the broken line arrow in FIG. Input to the constant current converter 12 from the terminal d. Then, the current input to the constant current converter 12 passes through the switch 122 that is turned on, passes through the reactor element 14 and the current detector 13, and is output from the output terminal X as the output current I. This output current I returns to the output terminal Y of the DC constant current power supply device 10 through the constant current flip-flop circuit 20 and the constant current flip-flop type reluctance motor 30 as described above (see FIG. 3). The current returned to the output terminal Y is input from the AC side terminal a to the regenerative inverter 11 through the switch 123 that is turned on by the constant current converter 12 and the AC side terminal c. The current input to the regenerative inverter 11 returns to the terminal (+) of the DC power supply 100 through the switch 111 that is turned on.

  Further, the mode (2) is the same as the mode (1) in the control in which the phase angle α is zero as described above, and as indicated by the broken line arrow in FIG. ) Is input to the constant current converter 12 from the AC side terminal c through the switch 111 and the AC side terminal a of the regenerative inverter 11, and the current passes through the switch 121, and further, the reactor element 14 and the current detector 13. And output as an output current I from the output terminal X. This output current I returns to the output terminal Y of the DC constant current power supply device 10 through the constant current flip-flop circuit 20 and the constant current flip-flop type reluctance motor 30 as described above (see FIG. 3). The current returned to the output terminal Y is input to the regenerative inverter 11 from the AC side terminal b through the switch 124 and the AC side terminal d of the constant current converter 12, and the current passes through the switch 114 and is supplied to the DC power source 100. Return to terminal (-).

  In the mode (3), as indicated by the broken line arrow in FIG. 14, the current from the terminal (−) of the DC power supply 100 is switched on by the regenerative inverter 11 through the switch 113 and the AC side terminal a. Input to the constant current converter 12 from the side terminal c. Then, the current input to the constant current converter 12 passes through the switch 121 that is turned on, and further passes through the reactor element 14 and the current detector 13 to be output as the output current I from the output terminal X. This output current I returns to the output terminal Y of the DC constant current power supply device 10 through the constant current flip-flop circuit 20 and the constant current flip-flop type reluctance motor 30 as in the mode (1). The current that has returned to the output terminal Y is input to the regenerative inverter 11 from the AC side terminal b through the switch 124 that is turned on by the constant current converter 12 and the AC side terminal d. The current input to the regenerative inverter 11 returns to the terminal (+) of the DC power supply 100 through the switch 112 that is turned on.

  Further, mode (4) is the same as mode (2) in the control in which the phase angle α is zero as described above, and as shown by the broken line arrow in FIG. Is input to the constant current converter 12 from the AC side terminal c through the switch 112 and the AC side terminal b of the regenerative inverter 11, and the current passes through the switch 122, and further passes through the reactor element 14 and the current detector 13. And output as an output current I from the output terminal X. This output current I returns to the output terminal Y of the DC constant current power supply device 10 through the constant current flip-flop circuit 20 and the constant current flip-flop type reluctance motor 30 as described above (see FIG. 3). The current returned to the output terminal Y is input to the regenerative inverter 11 from the AC side terminal a through the switch 123 and the AC side terminal c of the constant current converter 12, and the current passes through the switch 113 and is supplied to the DC power source 100. Return to terminal (-).

The period of the mode (1) and mode (3), the square wave alternating current i _i becomes negative when a rectangular wave AC voltage e _i is positive, also when the rectangular wave AC voltage e _i is negative The rectangular wave alternating current i _i becomes positive, and the current i _i flows toward the positive potential of the voltage e _i , that is, flows in the direction of charging the DC power supply 100, and the power regeneration operation is performed. Further, during the period of the mode (2) and the mode (4), the DC power source 100 discharges as in the control in which the phase angle α is zero. The operation in these modes (1) to (4), as shown in FIG. 12, the output voltage e _o in a state where the output current I is maintained at the DC constant-current constant-current converter 12, the mode (1) and During the mode (3) period, the negative voltage (−E) is obtained, and during the mode (2) and mode (4) periods, the positive voltage (E) is obtained. In this case, the output voltage e _o is a period of negative voltage (-E) and becomes the mode (1) and mode (3) is, the mode (2) and the mode in which the output voltage e _o is a positive voltage (+) ( Since the state is shorter than the period of 4), the average output voltage E _o is a positive voltage, specifically, 2 / 3E reduced from the voltage E at the phase angle α = 0 °.

Further, FIG. 15, as the phase angle α of the square wave alternating current i _i relative to the rectangular wave AC voltage e _i supplied from the regenerative inverter 11 by the constant current control circuit 80 is 90 °, the constant current The case where the switches 121, 122, 123, and 124 of the second bridge in the converter 12 are controlled is shown. In this case, one switch pair 121, 124 of the second bridge in the constant current converter 12 is turned on for a period of 180 ° at a control angle (phase angle) α = 90 °, and the other switch pair 122, 123 is turned on for a period of 180 ° at a control angle α = (90 ° + 180 ° = 270 °). As in the case of the control of the phase angle α = 30 ° (see FIG. 12) described above, one of the switches 111 and 114 of the first bridge in the regenerative inverter 11 is turned on and the second current in the constant current converter 12 is turned on. Mode (1) in which the other switch pair 122 and 123 of the bridge is turned on, and one switch pair 111 and 114 of the first bridge in the regenerative inverter 11 is turned on and one of the second bridges in the constant current converter 12 The switch pair 121, 124 of the second bridge of the constant current converter 12 is turned on while the other switch pair 112, 113 of the regenerative inverter 11 is turned on. The mode (3) in which the on operation is performed and the first block in the regenerative inverter 11 The mode (4) in which the other switch pair 112, 113 of the ridge is turned on and the other switch pair 122, 123 of the second bridge in the constant current converter 12 is turned on is repeated in one cycle.

  The mode (1) is the same as the mode (1) in the control in which the phase angle is 30 ° as described above, and the current from the terminal (−) of the DC power source 100 is changed as shown by the broken line arrow in FIG. An output current I is output from the output terminal X through the switch 114 in the regenerative inverter 11 and the switch 122 in the constant current converter 12 and further through the reactor element 14 and the current detector 13. This output current I is supplied to the constant current flip-flop type reluctance motor 30 (A phase coil 322, B phase coil 323) via the constant current flip-flop circuit 20 as described above (see FIG. 3). Return to the output terminal Y of the DC constant current power supply 10. Then, the current returned to the output terminal Y returns to the terminal (+) of the DC power supply 100 through the switch 123 of the constant current converter 12 and the switch 111 of the regenerative inverter 11.

  Further, in the mode (2), as in the case of the mode (1) in the control in which the phase angle α is zero as described above, the terminal (+) of the DC power source 100 is shown as indicated by the broken line arrow in FIG. From the output terminal X passes through the switch 111 of the regenerative inverter 11 and the switch 121 of the constant current converter 12, passes through the reactor element 14 and the current detector 13, and is output as the output current I. This output current I is supplied to the constant current flip-flop type reluctance motor 30 (A phase coil 322, B phase coil 323) via the constant current flip-flop circuit 20 as described above (see FIG. 3). Return to the output terminal Y of the DC constant current power supply 10. The current returned to the output terminal Y returns to the terminal (−) of the DC power supply 100 through the switch 124 of the constant current converter 12 and the switch 114 of the regenerative inverter 11.

  Further, the mode (3) is the same as the mode (3) in the control in which the phase angle α is 30 °, and the current from the terminal (−) of the DC power supply 100 as shown by the broken line arrow in FIG. Passes through the switch 113 in the regenerative inverter 11 and the switch 121 in the constant current converter 12, passes through the reactor element 14 and the current detector 13, and is output as an output current I from the output terminal X. This output current I is supplied to the constant current flip-flop type reluctance motor 30 (A phase coil 322, B phase coil 323) via the constant current flip-flop circuit 20 as described above (see FIG. 3). Return to the output terminal Y of the DC constant current power supply 10. Then, the current returned to the output terminal Y returns to the terminal (+) of the DC power supply 100 through the switch 124 of the constant current converter 12 and the switch 112 of the regenerative inverter 11.

  Further, mode (4) is the same as mode (2) in the control in which the phase angle α is zero as described above, and as shown by the broken line arrow in FIG. From the output terminal X passes through the switch 112 of the regenerative inverter 11 and the switch 122 of the constant current converter 12, passes through the reactor element 14 and the current detector 13, and is output as the output current I. This output current I is supplied to the constant current flip-flop type reluctance motor 30 (A phase coil 322, B phase coil 323) via the constant current flip-flop circuit 20 as described above (see FIG. 3). Return to the output terminal Y of the DC constant current power supply 10. The current returned to the output terminal Y returns to the terminal (−) of the DC power supply 100 through the switch 123 of the constant current converter 12 and the switch 113 of the regenerative inverter 11.

In the period of the mode (1) and the mode (3), the rectangular wave alternating current i _i becomes negative when the rectangular wave alternating voltage e _i becomes positive, as in the case of the control where the phase angle α is 30 °. When the rectangular wave AC voltage e _i becomes negative, the rectangular wave AC current i _i becomes positive, and this current i _i flows in the direction of charging the DC power source 100 to perform the power regeneration operation. Further, during the period of the mode (2) and the mode (4), the DC power source 100 discharges as in the control in which the phase angle α is zero. The operation in these modes (1) to (4), as shown in FIG. 15, the output voltage e _o in a state where the output current I is maintained at the DC constant-current constant-current converter 12, the mode (1) and During the mode (3) period, the negative voltage (−E) is obtained, and during the mode (2) and mode (4) periods, the positive voltage (E) is obtained. In this case, the mode (1) and the mode (3) in which the output voltage _eo is a negative voltage (−E) (period of power regeneration operation), and the output voltage _eo is the positive voltage (+ E). Since the period of mode (2) and mode (4) (discharge operation period) is the same length, the average output voltage E _o is zero (E _o = 0).

For example, FIG. 16, the phase angle alpha is 150 ° rectangular-wave alternating current i _i relative to the rectangular wave AC voltage e _i supplied from the regenerative inverter 11 by the constant current control circuit 80 (alpha = 150 °) The case where the switches 121, 122, 123, and 124 of the second bridge in the constant current converter 12 are controlled is shown. In this case, one switch pair 121, 124 of the second bridge in the constant current converter 12 is turned on for a period of 180 ° at a control angle (phase angle) α = 150 °, and the other switch pair 122, 123 is turned on for a period of 180 ° at a control angle α = (150 ° + 180 ° = 330 °). Then, as in the case of the control in which the phase angle α is 30 ° (see FIG. 12) or the control in which the phase angle α is 90 ° (see FIG. 15), one of the first bridges in the regenerative inverter 11 is used. A mode (1) in which the switches 111 and 114 are turned on and the other switch pair 122 and 123 of the second bridge in the constant current converter 12 is turned on, and one switch pair 111 of the first bridge in the regenerative inverter 11 The second switch pair 121 and 124 of the second bridge in the constant current converter 12 is turned on and the second switch pair 112 and 113 of the regenerative inverter 11 is turned on and the constant current converter 12 is turned on. Mode in which one switch pair 121, 124 of the second bridge in current converter 12 is turned on 3) and the mode (4) in which the other switch pair 112, 113 of the first bridge in the regenerative inverter 11 is turned on and the other switch pair 122, 123 of the second bridge in the constant current converter 12 is turned on. Is repeated in one cycle.

  The mode (1) is the same as the mode (1) in the control in which the phase angle α is 30 ° and the control in which the phase angle α is 90 °, as shown by the broken line arrow in FIG. The current from the terminal (−) of 100 passes through the switch 114 in the regenerative inverter 11 and the switch 122 of the constant current converter 12, and further passes through the reactor element 14 and the current detector 13 to be output as the output current I from the output terminal X. . This output current I is supplied to the constant current flip-flop type reluctance motor 30 (A phase coil 322, B phase coil 323) via the constant current flip-flop circuit 20 as described above (see FIG. 3). Return to the output terminal Y of the DC constant current power supply 10. Then, the current returned to the output terminal Y returns to the terminal (+) of the DC power supply 100 through the switch 123 of the constant current converter 12 and the switch 111 of the regenerative inverter 11.

  Further, in the mode (2), as in the case of the mode (1) in the control in which the phase angle α is zero as described above, the terminal (+) of the DC power source 100 is shown as indicated by the broken line arrow in FIG. From the output terminal X passes through the switch 111 of the regenerative inverter 11 and the switch 121 of the constant current converter 12, passes through the reactor element 14 and the current detector 13, and is output as the output current I. This output current I is supplied to the constant current flip-flop type reluctance motor 30 (A phase coil 322, B phase coil 323) via the constant current flip-flop circuit 20 as described above (see FIG. 3). Return to the output terminal Y of the DC constant current power supply 10. The current returned to the output terminal Y returns to the terminal (−) of the DC power supply 100 through the switch 124 of the constant current converter 12 and the switch 114 of the regenerative inverter 11.

  The mode (3) is the same as the mode (3) in the control in which the phase angle α is 30 ° and the control in which the phase angle α is 90 °, and as shown by the broken line arrow in FIG. The current from the terminal (−) of 100 passes through the switch 113 in the regenerative inverter 11 and the switch 121 of the constant current converter 12, and further passes through the reactor element 14 and the current detector 13 to be output as the output current I from the output terminal X. . This output current I is supplied to the constant current flip-flop type reluctance motor 30 (A phase coil 322, B phase coil 323) via the constant current flip-flop circuit 20 as described above (see FIG. 3). Return to the output terminal Y of the DC constant current power supply 10. Then, the current returned to the output terminal Y returns to the terminal (+) of the DC power supply 100 through the switch 124 of the constant current converter 12 and the switch 112 of the regenerative inverter 11.

  Further, mode (4) is the same as mode (2) in the control in which the phase angle α is zero as described above, and as shown by the broken line arrow in FIG. From the output terminal X passes through the switch 112 of the regenerative inverter 11 and the switch 122 of the constant current converter 12, passes through the reactor element 14 and the current detector 13, and is output as the output current I. This output current I is supplied to the constant current flip-flop type reluctance motor 30 (A phase coil 322, B phase coil 323) via the constant current flip-flop circuit 20 as described above (see FIG. 3). Return to the output terminal Y of the DC constant current power supply 10. The current returned to the output terminal Y returns to the terminal (−) of the DC power supply 100 through the switch 123 of the constant current converter 12 and the switch 113 of the regenerative inverter 11.

In the period of the mode (1) and the mode (3), the current i _i flows in the direction of charging the DC power source 100 as in the case where the phase angle α is 30 ° and the phase angle α is 90 °. Power regeneration operation is performed. Further, during the period of the mode (2) and the mode (4), the DC power supply 100 discharges in the same manner as the control at the phase angle α = 0 ° described above. The operation in these modes (1) to (4), as shown in FIG. 16, the output voltage e _o in a state where the output current I is maintained at the DC constant-current constant-current converter 12, the mode (1) and During the mode (3) period, the negative voltage (−E) is obtained, and during the mode (2) and mode (4) periods, the positive voltage (E) is obtained. In this case, during the period of mode (1) and mode (3) in which the output voltage _eo is a negative voltage (-E) (period of power regeneration operation), the output voltage _eo is a positive voltage (+ E). Since the state is longer than the period of mode (2) and mode (4) (discharge operation period), the average output voltage E _o is a negative voltage, and the average output voltage E _o is a negative voltage, specifically, − 2 / 3E. In this case, as a whole, power regeneration is performed from the constant current flip-flop type reluctance motor 30 side.

If the load of the constant current converter 12 (DC constant current power supply apparatus 10) is a passive load such as a resistance load, the average output voltage E _o is zero (see FIG. 15) with the phase angle α being 90 ° (see FIG. 15). E _o = 0), and the output current I irrespective of the command value given to the constant current control circuit 80 provides the operation limit is zero (I = 0). Therefore, the operation of the DC constant current power supply device 10 when the phase angle α is in the range of 90 ° ≦ α ≦ 180 ° generates a “negative” electromotive force like a motor load in the constant current converter 12. The active load to be obtained is connected, the AC side terminals c and d of the constant current converter 12 are connected to a stable AC power source ei that can be regenerated, and the phase angle α is an appropriate value of 90 ° ≦ α. This is possible under the condition that

Furthermore, for example, FIG. 17, as the phase angle α of the square wave alternating current i _i relative to the rectangular wave AC voltage e _i supplied from the regenerative inverter 11 by the constant current control circuit 80 becomes 180 °, The case where the switches 121, 122, 123, and 124 of the second bridge in the constant current converter 12 are controlled is shown. In this case, one switch pair 121, 124 of the second bridge in the constant current converter 12 is turned on for a period of 180 ° at a control angle (phase angle) α = 180 °, and the other switch pair 122, 123 is turned on for a period of 180 ° at a control angle α = (180 ° + 180 °). Then, the mode (1) in which one switch pair 111, 114 of the first bridge in the regenerative inverter 11 is turned on and the other switch pair 122, 123 of the second bridge in the constant current converter 12 is turned on; The mode (2) in which the other switch pair 112, 113 of the first bridge in the type inverter 11 is turned on and the one switch pair 121, 124 of the second bridge in the constant current converter 12 is turned on is one cycle. Repeated.

  In the mode (1), the phase angle α is the same as that in the mode (1) in the control of each of 30 °, 90 °, and 150 °, and as indicated by the broken line arrow in FIG. The current from the terminal (−) passes through the switch 114 of the regenerative inverter 11 and the switch 122 of the constant current converter 12, further passes through the reactor element 14 and the current detector 13, and is output as the output current I from the output terminal X. This output current I is supplied to the constant current flip-flop type reluctance motor 30 (A phase coil 322, B phase coil 323) via the constant current flip-flop circuit 20 as described above (see FIG. 3). Return to the output terminal Y of the DC constant current power supply 10. Then, the current returned to the output terminal Y returns to the terminal (+) of the DC power supply 100 through the switch 123 of the constant current converter 12 and the switch 111 of the regenerative inverter 11.

  In the mode (2), the phase angle α is the same as that in the mode (3) in the control of 30 °, 90 °, and 150 °, respectively. The current from the terminal (−) passes through the switch 113 in the regenerative inverter 11 and the switch 121 in the constant current converter 12, further passes through the reactor element 14 and the current detector 13, and is output as the output current I from the output terminal X. This output current I is supplied to the constant current flip-flop type reluctance motor 30 (A phase coil 322, B phase coil 323) via the constant current flip-flop circuit 20 as described above (see FIG. 3). Return to the output terminal Y of the DC constant current power supply 10. Then, the current returned to the output terminal Y returns to the terminal (+) of the DC power supply 100 through the switch 124 of the constant current converter 12 and the switch 112 of the regenerative inverter 11.

In the case of the control in which the phase angle α is 180 °, the current i _i flows toward the positive potential of the voltage e _i during the entire period of the mode (1) and the mode (2). In the direction of charging, power regeneration operation is performed. The current converter 12 outputs a voltage e _o of the negative voltage value obtained by inverting the peak value E by inverse transformation of the square wave alternating current e _i from the regenerative inverter 11 (-E). Output voltage E _o of the negative voltage value output voltage e _o is smoothed by the reactor element 14 output terminals X, between Y (-E) it appears.

In this way, with the output current I held constant (DC constant current), the phase angle α of the rectangular AC current i _i with the rectangular AC voltage e _i from the regenerative inverter 11 as a reference is set to 180 ° (α = 180 °), the output voltage E _o of the DC power supply 100 from the DC constant current power supply device 10 (constant current converter 12) is the maximum negative voltage value (E _o = −E) of the voltage value −E. It becomes. Then, the supply of the DC constant current I based on the output voltage E _o (= −E) to the constant current flip-flop type reluctance motor 30 is maintained, and power regeneration from the constant current flip-flop type reluctance motor 30 side is generated. Made.

In the operation of the DC constant current power supply device 10 described above, the relationship between the phase angle α and the output voltage E _o is as shown in FIG. The regenerative stable rectangular wave AC voltage e _i , the electromotive force E _{o of} the active load (constant current flip-flop type reluctance motor 30) that changes in magnitude, positive and negative, and the phase angle α are 3 Depending on the conditions, power can be transferred in either the supply or regeneration direction.

According to the DC constant current power supply device 10 described above, the phase angle α of the AC side rectangular wave AC current i _i in the constant current converter 12 with the rectangular wave AC voltage e _i from the regenerative inverter 11 as a reference is set to 0 ° to 0 °. By controlling in the range of 180 °, the output voltage I _o is controlled according to the driving, regenerative braking and speed of the constant current flip-flop type reluctance motor 30 while maintaining the output current I at a DC constant current according to the command value. Thus, since the control can be performed over the entire range from the negative voltage to the positive voltage (see FIG. 18), the switching of the switch pair in the bridge as in the prior art is not particularly required, and the phase angle α is reduced to 0. By controlling at a angle between 180 ° and 180 °, the constant current flip-flop type reluctance motor 30 can be driven and braked, and the power corresponding to the motor output can be automatically supplied and regenerated. Become.

  The first bridge and the second bridge in the regenerative inverter 11 and the constant current converter 12 in the DC constant current power supply device 10 described above are single-phase bridges, but are configured by multiphase bridges such as three-phase bridges. It is also possible.

  FIG. 19 shows the operation of the DC constant current power supply device 10 corresponding to a series of operations of starting acceleration, constant speed rotation, regenerative braking, and stopping of the constant current flip-flop type reluctance motor 30. As shown in FIG. 11A, when the constant current flip-flop type reluctance motor 30 is operated (acceleration, constant speed, deceleration (braking)), as shown in FIG. The current power supply 10 needs to supply a constant current larger than that during constant speed rotation to the constant current flip-flop circuit 20 when the constant current flip-flop type reluctance motor 30 is driven (accelerated) and braked (decelerated).

  The load electromotive force viewed from the output terminal X of the DC constant current power supply device 10 is positive in the driving (acceleration) state and negative in the braking (deceleration) state, and the magnitude thereof is the rotation of the constant current flip-flop type reluctance motor 30. It is almost proportional to the rotation speed of the child. The DC constant current power supply device 10 outputs a voltage obtained by adding a voltage drop (resistance drop) due to a resistance component of a load circuit to a positive and negative load electromotive force, as indicated by a dotted line in FIG. A constant DC current can be supplied to the constant current flip-flop circuit 20. Thereby, at the time of braking of the constant current flip-flop type reluctance motor 30, regenerative braking is possible until it stops.

When the constant current flip-flop type reluctance motor 30 on the load side is in a braking (deceleration) state, the load electromotive force is negative. In this case, due to the above-described operation of the DC constant current power supply device 10, the output voltage E _o becomes negative as shown in FIGS. 16 and 17, and the regenerative current flows from the positive terminal of the DC power supply 100 from the load side. This phenomenon is similar to the charging of the battery. The DC power supply 100 has a charging function and charges regenerative power. On the other hand, when the DC power supply 100 is a fuel cell or the like and does not have a charging function, it is necessary to connect an ultracapacitor in parallel to the DC power supply 100 for energy recovery. Furthermore, even when the DC power source 100 has a charging function like a lithium ion battery, when the regenerative power becomes a steep fluctuation of several tens of seconds, it cannot be appropriately charged. It is desirable to connect an ultracapacitor in parallel with the DC power supply 100.

  Thus, in the constant current type regenerative switched reluctance motor drive system according to the embodiment of the present invention, the constant current flip-flop circuit 20 is configured such that when one of the switching elements 211 and 221 is on, the other is off. By performing the so-called flip-flop operation, the DC constant current I from the constant current DC power supply device 10 is alternately distributed to the A-phase coil 322 and the B-phase coil 323 in the constant-current flip-flop type reluctance motor 30. A rectangular wave current is passed through these A-phase coil 322 and B-phase coil 323. Then, the torque generated in the rotor 31 by the attraction force by the stator magnetic poles 321a, 321b, 321c, and 321d is theoretically maximized, and the switching timing of the semiconductor switches 211 and 221 is output during driving at the time of braking. The power regeneration can be efficiently performed by shifting the angle corresponding to the electrical angle of 180 ° from the timing by the rotation time.

  In the embodiment described above, in the constant current flip-flop type reluctance motor 30, the rotor 32 has two rotor convex poles 313a and 313b, and the stator 32 has four stator magnetic poles 321a and 321b, The two-phase four-pole configuration having 321c and 321d is used, but the rotor 32 has 2n (n is an integer) rotor convex poles and the stator 32 has 4n stator poles. A 2n pole configuration may be used.

  FIG. 20 is a cross-sectional view showing the structure of a constant current flip-flop type reluctance motor 30 having two phases and eight poles. In the constant current flip-flop type reluctance motor 30 shown in FIG. 20, the rotor 31 includes four rotor convex poles 315 a, 315 b, 315 c, and 315 d extending in the circumferential direction on the outer peripheral surface of the rotary core 315. They are arranged and formed at equal intervals (90 ° angular intervals). The stator 32 that surrounds the rotor 31 has eight stator magnetic poles 324a, 324b, 324c, 324d, 324e, 324f, 324g, and 324h on the inner peripheral surface of a cylindrical shape 324 at an equal interval in the circumferential direction (an angle of 45 °). The structure is formed at intervals. The relative relationship between the stator 32 and the rotor 31 so that a predetermined gap is formed between the front end surfaces of the stator magnetic poles 324a to 324h and the front end surfaces of the angular rotor convex poles 315a to 315d of the rotor 31. The positional relationship is set.

  In the stator 32, excitation coils 325a, 325b, 325c, and 325d are fixed from the stator magnetic pole 324a to the stator magnetic poles 324a, 324c, 324e, and 324g arranged every other one of the eight stator magnetic poles 324a to 324h. A magnetic flux is formed in a direction toward the child magnetic pole 324c, and is wound so that a magnetic flux is also formed in a direction from the stator magnetic pole 324e toward the stator magnetic pole 324g. These four exciting coils 325a to 325d are connected in series to constitute an A-phase coil as a whole. Excitation coils 326a, 326b, 326c, and 326d are formed on the remaining four stator magnetic poles 324b, 324d, 324f, and 324h, and a magnetic flux is formed in the direction from the stator magnetic pole 324b to the stator magnetic pole 324d, and from the fixed magnetic pole 234e. It is wound so that a magnetic flux is formed in a direction toward the stator magnetic pole 324g. These four excitation coils 326a to 326d are connected in series to constitute a B-phase coil as a whole.

  When using this two-phase eight-pole constant-current flip-flop type reluctance motor 30, the magnetic path cross-sectional area of the yoke 324 is reduced to reduce the size and weight, and the torque pulsation cycle is shifted to a high frequency range. be able to.

  Furthermore, in the constant current flip-flop type reluctance motor 30 described above, the stator 32 can be configured by a plurality of stator portions (multiplexing of stators). An example of this configuration is shown in FIG. In FIG. 21, the stator 32 surrounding the rotor 31 includes four first stator portions 32-1, a second stator portion 32-2, a third stator portion 32-3, and a fourth stator portion 32-. 4 is configured.

  Each stator portion 32-1, 32-2, 32-3, 32-4 has the same structure as the stator 32 (see FIG. 2) of the constant current flip-flop type reluctance motor 30 described above. That is, each of the stator portions 32-1, 32-2, 32-3, and 32-4 has a cylindrical yoke as shown in FIGS. 22 (a), (b), (c), and (d). Four stator magnetic poles 321a, 321b, 321c, and 321d are formed on the inner peripheral surface of 321 at equal intervals (angle intervals of 90 °) in the circumferential direction. In each of the stator portions 32-1 to 32-4, excitation coils 322 a and 322 b are connected to the magnetic poles 321 a and 321 c arranged every other one of the stator magnetic poles 321 a, 321 b, 321 c, and 321 d, and the fixed magnetic poles 321 a to It is wound so that a magnetic flux is formed in the direction toward 321c, and the exciting coils 322a and 322b are connected in series. Further, excitation coils 323a and 323b are wound around the remaining fixed magnetic poles 321b and 321d so that a magnetic flux is formed in a direction from the fixed magnetic pole 321b toward the fixed magnetic pole 321d, and the excitation coils 323a and 323b are connected in series. Yes.

  The excitation coils 322a and 322b connected in series include the first A-phase coil 322-1 in the first stator portion 32-1 and the second A-phase coil 322-2 in the second stator portion 32-2. The third stator portion 32-3 constitutes a third A-phase coil 322-3, and the fourth stator portion 32-4 constitutes a fourth A-phase coil 322-4. Further, the exciting coils 323a and 323b connected in series include the first B-phase coil 323-1 in the first stator portion 32-1 and the second B-phase coil 323 in the second stator portion 32-2. 2, a third B-phase coil 323-3 is formed in the third stator portion 32-3, and a fourth B-phase coil 323-4 is formed in the fourth stator portion 32-4.

  The stator portions 32-1 to 32-4 surrounding the common rotor 31 are rotated by a predetermined angle around the rotor 31 (rotary shaft 312) with a predetermined interval in the direction in which the rotary shaft 312 extends. Is arranged in. Specifically, the second stator portion 32-2 (reference position A) is different from the first stator portion 32-1 (reference position A) shown in FIG. As shown in FIG. 14, the third stator portion 32-3 (reference position A) is arranged in a state rotated by 45 ° as shown in FIG. The fourth stator portion 32-4 (reference position A) is arranged in a state rotated by 67.5 ° as shown in FIG. As a result of the arrangement of the four stator portions 32-1 to 32-4, the 16 magnetic poles in all four stator portions 32-1 to 32-4 are equiangularly spaced (equal angle pitch: 22.2. 5 °).

  In this way, the constant current flip-flop type reluctance motor 30 (multiple stator type switched reluctance motor) in which the stator 32 is constituted by the four stator portions 32-1, 32-2, 32-3, and 32-4. The motor driving system including the above is configured as shown in FIG. In FIG. 23, the first constant current flip-flop circuit 20a includes a first A-phase coil 322-1 and a first B-phase coil 323-1 of the first stator portion 32-1 in the constant-current flip-flop type reluctance motor 30. The second constant current flip-flop circuit 20b is connected to the second A-phase coil 322-2 and the second B-phase coil 323-2 of the second stator portion 32-2 in the motor 30, and the third The constant current flip-flop circuit 20c is connected to the third A phase coil 322-3 and the third B phase coil 323-3 of the third stator portion 32-3 in the motor 30, and further, a fourth constant current flip-flop circuit. 20 d is connected to the fourth A-phase coil 322-4 and the fourth B-phase coil 323-4 of the fourth stator portion 32-4 in the motor 30.

  Each constant current flip-flop circuit 20a (20b, 20c, 20d) includes a first switching element 211a (211b, 211c, 211d) and a diode 212a (212b), similar to the constant current flip-flop circuit 20 (see FIG. 3) described above. 212c, 212d), 213a (213b, 213c, 213d), a first current path 210a (210b, 210c, 210d), a second switching element 221a (221b, 221c, 221d) and a diode 222a (222b, 222c). 222d) and 223a (223b, 223c, 223d) and a second current path 220a (220b, 220c, 220d). Then, the first current path 210a (210b, 210c, 210d) and the first A-phase coil 322-1 (second A-phase coil 322-2, third A-phase of the constant current flip-flop type reluctance motor 30 are provided. The coil 322-3 and the fourth A-phase coil 322-4) are connected in series, and the second current path 220a (220b, 220c, 220d) and the first B-phase coil of the constant current flip-flop type reluctance motor 30 323-1 (second B phase coil 323-2, third B phase coil 323-3, and fourth B phase coil 323-4) are connected in series.

  Four units in which the constant-current flip-flop circuit and the A-phase coil and the B-phase coil of the constant-current flip-flop type reluctance motor 30 are connected are connected in series. Specifically, the output terminal X of the DC constant current power supply device 10 is connected to the first current path 210a and the second current path 220a in the first constant current flip-flop circuit 20a in the first stage. Then, the first A-phase coil 322-1 and the first B-phase coil 323-1 are connected to the first current path 210b and the second current path 220b in the second constant current flip-flop circuit 20b in the next stage. The second A-phase coil 322-2 and the second B-phase coil 323-2 are connected to the point, and the first current path 210c and the second current path 220c in the third constant current flip-flop circuit 20c in the next stage are connected. And the third A-phase coil 322-3 and the third B-phase coil 323-3 are connected to the first current path 210b and the second current in the fourth constant current flip-flop circuit 20d in the next stage. It is connected to a connection point with the current path 220b. Further, the fourth A-phase coil 322-4 and the fourth B-phase coil 232-4 connected to the fourth constant current flip-flop 20d at the final stage are connected to the output terminal Y of the DC constant current power supply device 10. ing.

  The flip-flop control circuit 61 performs the same control as the flip-flop control circuit 60 shown in FIG. 3 in the first constant current flip-flop circuit 20a, the second constant current flip-flop circuit 20b, the third constant current flip-flop circuit 20c, and the second constant current flip-flop circuit 20c. This is performed for each of the four constant current flip-flop circuits 20d. That is, the flip-flop control circuit 61 determines the first constant current flip-flop 20a in the first constant current flip-flop 20a based on the angular position information representing the relative angular position of the rotor 31 with respect to the first stator portion 32-1 from the angle sensor. Angular position information that outputs an operation signal for turning on and off the first switching element 211a and the second switching element 221a and represents a relative angular position of the rotor 31 with respect to the second stator portion 32-2 from the angle sensor. Based on, an operation signal for turning on and off the first switching element 211b and the second switching element 221b in the second constant current flip-flop 20b is output. In addition, the flip-flop control circuit 61 uses the angular position information representing the relative angular position of the rotor 31 with respect to the third stator portion 32-3 from the angle sensor to generate the third constant current flip-flop 20c. Angular position information that outputs an operation signal for turning on and off the first switching element 211c and the second switching element 221c and represents the relative angular position of the rotor 31 with respect to the fourth stator portion 32-4 from the angle sensor. Based on, an operation signal for turning on and off the first switching element 211d and the second switching element 221d in the fourth constant current flip-flop 20d is output. Further, when the braking command is input, the flip-flop control circuit 61 shifts the output timing of the operation signal by the time for which the rotor 11 rotates an angle corresponding to the electrical angle of 180 ° from the output timing at the time of driving.

  By the operation of the flip-flop control circuit 61 as described above, in the constant current flip-flop type reluctance motor 30, the first stator portion 32-1 is alternately switched to the A-phase coil 322-1 and the B-phase coil 323-1. The flow of the rectangular wave alternating current, the flow of the alternating rectangular wave alternating current to the A phase coil 322-2 and the B phase coil 323-2 of the second stator portion 32-2, and the third stator portion 32-3 The flow of alternating rectangular wave alternating current to the A-phase coil 322-3 and the B-phase coil 323-3, and to the A-phase coil 322-4 and the B-phase coil 323-4 of the fourth stator portion 32-4 The alternating rectangular wave alternating current flow is switched to circulate. Thereby, torque is generated in the rotor 31 on the same principle as described above (see FIGS. 4A to 4E), and the rotor 31 rotates (drive of the constant current flip-flop type reluctance motor 30). Further, by shifting the output timing of the operation signal from the output timing at the time of driving by the time for which the rotor 31 rotates an angle corresponding to the electrical angle of 180 °, the same principle as described above (see FIGS. 6A to 6E). ), A braking force acts on the rotor 31 to brake the rotor 31 (braking of the constant current flip-flop type reluctance motor 30).

  In the constant current flip-flop type reluctance motor 30, a plurality of stator portions 32-1, 32-2, 32-3, 32-4 are provided with the rotor 31 in common, and the stator portions 2-1, 32- 2, 32-3, 32-4 are shifted by a predetermined angular interval (for example, 22.5 °), and further, the constant current flip-flop circuit 20a corresponding to the plurality of stator portions 32-1 to 32-4. By performing the switching operation of ˜20d, the torque zero point is eliminated, the torque pulsation is reduced, the relative reactance of the exciting coil is reduced, and the overvoltage at the time of switching the current path to be conducted can be reduced. become able to.

  The DC constant current power supply device used in the motor drive system described above can also be configured as shown in FIG. This example is characterized in that a transformer circuit 16 connected to a commercial AC power supply is used instead of the DC power supply 100 and the constant current inverter 11 shown in FIG. The DC constant current power supply device 10 ′ shown in FIG. 24 is used in a motor drive system including a motor (for example, a constant current flip-flop type reluctance motor 30) that is driven in an environment where a commercial AC power supply can be used.

  A DC constant current power supply device 10 ′ shown in FIG. 24 includes a transformer circuit 16, a constant current converter 12, a current detector 13, and a reactor element 14 connected to a commercial AC power supply (for example, AC 100V). The constant current converter 12 includes four switches 121, 122, 123, and 124 that form a bridge, as in the above-described example (see FIG. 8). One AC side terminal c which is a connection point between the switches 121 and 123 of the bridge and the other AC side terminal d which is a connection point between the switches 122 and 124 of the bridge are secondary of the transformer circuit 16. Connected to the side terminal. One end on the output side of the bridge is connected to the output terminal X via the reactor element 14 and the current detector 12, and the other end on the output side of the bridge is connected to the output terminal Y. The AC side terminals c and d of the constant current converter 12 are connected to the secondary side terminal of the transformer circuit 16.

  Although not shown in FIG. 24, the DC constant current power supply apparatus 10 ′ has a constant current control circuit as in the example shown in FIG. The constant current control circuit maintains the DC constant current I (based on the command value) supplied from the output terminal X to the motor load side. Each switch 121, 122, 123 of the bridge in the constant current converter 12 is maintained. , 124 controls the phase angle α of the sine wave AC current on the AC side of the constant current converter 12 with the sine wave AC voltage from the transformer circuit 16 as a reference. The control of the phase angle α is performed in the same manner as in the above-described example (see FIGS. 9, 15, 16, 17, and 18).

According to such a DC constant current power supply device 10 ′, as in the DC constant current power supply device 10 (see FIG. 8) described above, the input to the constant current converter 12 based on the sine wave AC voltage from the transformer circuit 16. By controlling the phase angle α of the sinusoidal alternating current to be in the range of 0 ° to 180 °, the output voltage E _{o is controlled} to a constant current flip-flop while maintaining the output current I at a constant DC current according to the command value. Since the control can be performed over the entire range from a negative voltage to a positive voltage according to the driving, regenerative braking and speed of the type reluctance motor 30 (see FIG. 18), the switching control of the switch pair in the bridge as in the prior art. The constant current flip-flop type reluctance motor 30 is driven and braked according to the motor output by always turning on / off the switch and controlling its pulse width. Power can be automatically supplied and regenerated. The regenerative power can be returned to the commercial AC power supply via the transformer circuit 16.

  The DC constant current power supply device according to the present invention can more easily perform control for maintaining the output of a specified constant current regardless of whether the load is positive or negative. It is useful as a DC constant current power supply device that outputs a specified constant current regardless of the size and enables recovery of regenerative energy from the load side.

It is a block diagram which shows the basic composition of the motor drive system using the direct-current constant current power supply device which concerns on one Embodiment of this invention. It is sectional drawing which shows the structure of the constant current flip-flop reluctance motor (switched reluctance motor) used for the motor drive system shown in FIG. It is a circuit diagram which shows the structural example of the constant current flip-flop circuit which is used for the motor drive system shown in FIG. 1, and controls energization of the exciting coil of a constant current flip-flop reluctance motor. FIG. 3 is a diagram (part 1) illustrating a relationship between an exciting coil and a rotor (rotor convex pole) that are energized when a constant current flip-flop reluctance motor is driven. FIG. 7 is a diagram (part 2) illustrating a relationship between an exciting coil and a rotor (rotor convex pole) that are energized when the constant current flip-flop reluctance motor is driven. FIG. 9 is a diagram (No. 3) illustrating a relationship between an exciting coil and a rotor (rotor convex pole) that are energized when the constant current flip-flop reluctance motor is driven. FIG. 11 is a diagram (No. 4) illustrating a relationship between an exciting coil and a rotor (rotor convex pole) that are energized when the constant current flip-flop reluctance motor is driven. FIG. 10 is a diagram (No. 5) illustrating a relationship between an exciting coil and a rotor (rotor convex pole) that are energized when the constant current flip-flop reluctance motor is driven; It is a figure which shows the load electromotive force (a) at the time of the drive of a constant current flip-flop reluctance motor, and generated torque (b). FIG. 5 is a diagram (No. 1) illustrating a relationship between an exciting coil and a rotor that are energized during regenerative braking of a constant current flip-flop reluctance motor. FIG. 6 is a diagram (No. 2) illustrating a relationship between an exciting coil and a rotor that are energized during regenerative braking of a constant current flip-flop reluctance motor. FIG. 10 is a diagram (No. 3) illustrating a relationship between an exciting coil and a rotor that are energized during regenerative braking of the constant current flip-flop reluctance motor. FIG. 10 is a diagram (No. 4) illustrating a relationship between an exciting coil and a rotor that are energized during regenerative braking of the constant current flip-flop reluctance motor. FIG. 10 is a diagram (No. 5) illustrating the relationship between the exciting coil and the rotor that are energized during regenerative braking of the constant-current flip-flop reluctance motor. It is a figure which shows the load electromotive force (a) and the generated torque (b) at the time of braking of a constant current flip-flop reluctance motor. It is a circuit diagram which shows the structure of the direct-current constant current power supply device which concerns on embodiment of this invention. 7 is a timing chart showing a rectangular wave AC voltage e _i , a rectangular wave AC current i _i , an output current I, a converter output e _o , and an output voltage E _o in a control with a phase angle α of zero. It is a figure which shows the electric current which flows through a direct-current constant-current power supply device in the mode (1) of control shown in FIG. It is a figure which shows the electric current which flows through a direct-current constant current power supply device in the mode (2) of control shown in FIG. 6 is a timing chart showing a rectangular wave AC voltage e _i , a rectangular wave AC current i _i , an output current I, a converter output e _o , and an output voltage E _o in control at a phase angle α of 30 °. It is a figure which shows the electric current which flows through a direct-current constant-current power supply device in the mode (1) of control shown in FIG. It is a figure which shows the electric current which flows through a direct-current constant-current power supply device in the mode (3) of control shown in FIG. 6 is a timing chart showing a rectangular wave AC voltage e _i , a rectangular wave AC current i _i , an output current I, a converter output e _o , and an output voltage E _o in control at a phase angle α of 90 °. 4 is a timing chart showing a rectangular wave AC voltage e _i , a rectangular wave AC current i _i , an output current I, a converter output e _o , and an output voltage E _o in control at a phase angle α of 150 °. 4 is a timing chart showing a rectangular wave AC voltage e _i , a rectangular wave AC current i _i , an output current I, a converter output e _o , and an output voltage E _o in control at a phase angle α of 180 °. It is a figure which shows the characteristic of the output voltage _{Eo in} case the phase angle (alpha) is controlled in the range of 0 degrees <= alpha <= 180 degrees. It is a figure which shows the relationship between the state (acceleration, constant speed, deceleration (braking)) of a constant current flip-flop type reluctance motor, and the operation | movement (setting constant current value, output voltage) of a DC constant current power supply device. It is sectional drawing which shows the other structural example of a constant current flip-flop type reluctance motor. It is a figure which shows the further another basic structural example (multiple stator type switched reluctance motor) of a constant current flip-flop type reluctance motor. It is a figure which shows the structure of the several stator part in the constant current flip-flop type | mold reluctance motor (multiple stator type | mold reluctance motor) of the structure shown in FIG. FIG. 23 is a circuit diagram showing a configuration of a constant current flip-flop circuit in a motor driving system using the constant current flip-flop type reluctance motor shown in FIGS. 21 and 22 (multi-stator type switched reluctance motor). It is a circuit diagram which shows the direct current | flow constant current power supply device which concerns on other embodiment of this invention. It is a circuit diagram which shows the conventional DC constant current power supply device.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 DC constant current power supply device 11 Regenerative type inverter 111,112,113,114 switch 12 Constant current converter 121,122,123,124 Switch 13 Current detector 14 Reactor element 20 Constant current flip-flop circuit 210 1st current path 211 First switching element 212, 213 Diode 220 Second current path 221 Second switching element 222, 223 Diode 230 Capacitor 30 Constant current flip-flop type reluctance motor 31 Rotor 312 Rotating shaft 313 Rotating iron core 313a, 313b Rotor salient pole 32 Stator 321 Yoke 321a, 321b, 321c, 321d Stator magnetic pole 322a, 322b Excitation coil (A phase coil 322)
323a, 323b Excitation coil (B phase coil 323)
32-1 First Stator Part 32-2 Second Stator Part 32-3 Third Stator Part 32-4 Fourth Stator Part 40 Differential Gear 50 Mechanical Brake 60, 61 Flip-Flop Control Circuit 70 Clock Pulse Generation Circuit 80 Constant current control circuit 100 DC power supply

Claims (4)

Rechargeable DC power supply,
An inverter having a first bridge composed of a plurality of switches and having a DC side terminal connected to an output terminal of the DC power supply;
Inverter driving means for controlling on / off of each switch of the first bridge in the inverter with a pulse signal of a predetermined period, and outputting a rectangular wave AC voltage and current from an AC side terminal of the inverter;
A converter having a second bridge composed of a plurality of switches, an AC side terminal connected to the AC side terminal of the inverter and coupled to an output terminal to which a load is connected;
A rectangular wave AC voltage supplied from the AC side terminal of the inverter to the AC side terminal of the converter so that the output current is maintained in a constant direction and a specified constant value regardless of the positive and negative and magnitude of the load electromotive force. Constant current control means for controlling the output voltage appearing between the output terminals by controlling the phase of the rectangular wave alternating current with reference to the reference voltage, and automatically adjusting the load power according to the positive / negative and magnitude of the load electromotive force. DC constant current power supply unit that can supply and regenerate. A transformer circuit connected to a commercial AC power source and outputting a predetermined level of sinusoidal AC voltage and current from the secondary terminal;
A converter having a bridge composed of a plurality of switches, an AC side terminal connected to a secondary side terminal of the transformer circuit, and a converter coupled to an output terminal to which a load is connected;
Regardless of the sign of the load electromotive force and the magnitude, the sine wave AC voltage supplied from the transformer circuit to the AC side terminal of the converter is used as a reference so that the output current is maintained in a constant direction and a specified constant value. Constant current control means for controlling the phase of the sine wave alternating current to control the output voltage appearing at the output terminal, and can automatically supply and regenerate load power according to the positive / negative and magnitude of the load electromotive force. DC constant current power supply device. The rotor is made of a magnetic material, and 2n (n is an integer) convex portions are formed at equal intervals in the circumferential direction, and a predetermined gap is formed on the outer side of the rotor with respect to each convex portion. A stator having 4n magnetic poles arranged at equal intervals, and a first coil wound around each of the other 4n magnetic poles of the stator, A switched reluctance motor having a second coil wound around each of the remaining magnetic poles of the 4n magnetic poles;
DC constant current power supply device according to any one of claims 1 and 2,
A flip-flop circuit having a first current path and a second current path that can be switched alternately between conductive states;
Flip-flop control means for alternately switching the conduction state between the first current path and the second current path of the flip-flop circuit;
A DC constant current output from one output terminal of the DC constant current power supply device flows through the first coil of the switched reluctance motor through the first current path of the flip-flop circuit, and the DC constant current. Flows through the second coil of the switched reluctance motor through the second current path of the flip-flop circuit, and the DC constant current flowing through the first and second coils is the DC constant current power source. The DC constant current power supply device, the flip-flop circuit, and the switched reluctance motor are connected so as to return to the other output terminal of the device,
The flip-flop control means alternately switches the conduction state of the first and second current paths according to the angular position of the rotor of the switched reluctance motor, thereby generating a rectangular wave current having an electrical angle of 180 °. The timing of switching the conduction state of the first and second current paths between when the switched reluctance motor is driven and when the brake is driven is alternately passed through the first and second coils. A motor drive system for controlling the flip-flop circuit so as to be shifted by a rotation time of an angle corresponding to °. The rotor is made of a magnetic material, and 2n (n is an integer) convex portions are formed at equal intervals in the circumferential direction, and a predetermined gap is formed on the outer side of the rotor with respect to each convex portion. In this way, m stator parts having 4n magnetic poles arranged at equal intervals are overlapped in the axial direction so that the magnetic poles are equally spaced in the circumferential direction, and each stator part A first coil wound around each of the 4n magnetic poles, and a second coil wound around each of the remaining 4n magnetic poles. A multi-stator type switched reluctance motor having a coil of
DC constant current power supply device according to any one of claims 1 and 2,
M number of flip-flop circuits having a first current path and a second current path that can be switched alternately.
flip-flop control means for alternately switching the conduction state between the first current path and the second current path of each of the m flip-flop circuits,
Each of the m stator portions in the switched reluctance motor is associated with one of the m flip-flop circuits, and is provided in the stator portion corresponding to the first current path of each flip-flop circuit. The m number of flip-flop circuits are connected in series in a state where the first coil is connected in series and the second current path and the second coil provided in the corresponding stator portion are connected in series. The DC constant current output from one output terminal of the DC constant current power supply device is input to the first and second current paths of the first-stage flip-flop circuit connected in series, and the final stage The DC constant current flowing through the first coil connected to the first current path of the flip-flop and the second coil connected to the second current path is the other output of the DC constant current power supply device. As feedback to the child, the DC constant current power supply unit, are m the flip-flop circuit and the switched reluctance motor is connected,
The flip-flop control means alternately switches the conduction state of the first and second current paths in each of the m flip-flop circuits according to the angular position of the rotor of the switched reluctance motor, thereby A rectangular wave current having a width of ° is alternately supplied to the first and second coils, and the timing for switching the conduction state of the first and second current paths between when the switched reluctance motor is driven and when braking is performed. A motor drive system that controls each flip-flop so as to be shifted by an angle of rotation corresponding to an electrical angle of 180 ° of the rotor.

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