JP6942492B2 - Connector device - Google Patents

Description

Embodiments of the present invention relate to connector devices.

In the main power conversion device for railway vehicles, the withstand voltage test connector (receptacle: female side connector) for performing the withstand voltage test is used for the withstand voltage test in which each part of the main power conversion device is short-circuited during the withstand voltage test. Plug (male side connector) is attached.

This pressure resistance test plug is a circuit necessary for normal operation operation so that the plug is not lost during normal operation of a railway vehicle and the plug is not left attached to the pressure resistance test connector. For example, it is replaced and attached to the terminals of a pair of connectors of a VCB control circuit that controls a vacuum circuit breaker (VCB) that cuts off the power supply from the overhead wire, and is installed between the two terminals. (Refer to Patent Document 1 for the technique of replacing the plug at the time of the withstand voltage test).

Japanese Unexamined Patent Publication No. 2014-11001

By the way, in the conventional plug, a part of the terminals used for the withstand voltage test is electrically connected and connected between the connection terminals of the VCB control circuit.
For this reason, it is difficult to find a terminal that is not used for conduction between the connection terminals of the VBC control circuit and is used for the withstand voltage test even if there is an abnormality such as a disconnection, and there is an abnormality such as this disconnection. Even if the plug is used for the withstand voltage test, each part of the main power converter cannot be properly short-circuited, and there is a possibility that a sufficient voltage cannot be applied to the required test location.

Therefore, an object of the present invention is to provide a connector device capable of reliably ensuring the soundness of the connector device and performing a highly reliable withstand voltage test.

In order to solve the above problems, the connector device of the embodiment includes a vacuum breaker control circuit, a normal connector having a pair of check connection terminals of the vacuum breaker control circuit, and a plurality of pressure resistance test points connected to the plurality of pressure resistance test points. A connector device that is electrically connected to a power conversion device of a railway vehicle having a connector for pressure resistance test and has a terminal, and is a pair of check connection terminals connected to a pair of soundness check connection terminals. At least all of the connection terminals between the connection terminal including a plurality of withstand voltage test connection terminals connected to the withstand voltage test connector and connected to the corresponding withstand voltage test points and the soundness check connection terminal. It is provided with wiring in which the connection terminals for withstand voltage test are connected in a single stroke.

FIG. 1 is a schematic block diagram of a main power conversion device for a railway vehicle according to the first embodiment. FIG. 2 is an explanatory diagram of the wiring state inside the plug when viewed from the same direction as that of FIG. FIG. 3 is an explanatory diagram of a wiring state during normal operation of a railway vehicle. FIG. 4 is an explanatory diagram of the wiring state at the time of the withstand voltage test of the railway vehicle.

Hereinafter, embodiments will be described with reference to the drawings.
FIG. 1 is a schematic block diagram of a main power conversion device for a railway vehicle according to the first embodiment.
The main power converter 10 has a vacuum circuit breaker (VCB) 15 and a vacuum circuit breaker (VCB) 15 between a pantograph 12 to which AC power is supplied from an AC overhead wire (AC electric wire) 11 and a wheel 14 grounded via a line 13. The primary windings of the transformer 16 are connected in series.

Further, the main power conversion device 10 is connected to the secondary winding of the transformer 16 via a pair of contactors 17, and is connected to the converter unit 18 and the converter unit 18 for converting the supplied low-voltage AC power into DC power. Under the control of an inverter unit 19 that is connected in series and converts the DC power input from the converter unit 18 into three-phase AC power and outputs it to a three-phase AC motor (not shown), and a controller that controls the entire main power converter 10. A withstand voltage test is performed on the VCB control circuit 20 that controls the opening and closing of the VCB 15, the first connector (normal time connector: normal time receptacle) 21 to which the plug 30 described later is connected during normal operation of the railway vehicle, and the plug 30 described later. It is provided with a second connector (connector for withstand voltage test: receptacle for withstand voltage test) 22 which is sometimes connected.

Here, a configuration example of the second connector 22 will be described.
As shown in FIG. 1, in the second connector 22, the terminal T1 to which the external wiring is not connected and the withstand voltage test point TP4 set between the contactor 17 and the converter unit 18 are connected via the external wiring. The terminal T2, the terminal T3 to which the withstand voltage test point TP3 set between the contactor 17 and the converter unit 18 is connected via the external wiring, the terminal T4 to which the external wiring is not connected, and the secondary of the transformer 16. The withstand voltage test point TP2 set between the side winding and the contactor 17 is set between the terminal T5 connected via the external wiring and the secondary side winding of the transformer 16 and the contactor 17. The withstand voltage test point TP1 is provided with a terminal T6 connected via external wiring.

Further, in the second connector 22, the terminal T7 to which the external wiring is not connected, the terminal T8 to which the external wiring is not connected, and the withstand voltage test point TP9 provided in one of the three-phase AC side terminals of the inverter unit 19 are externally wired. The terminal T9 connected via the external wiring, the terminal T10 to which the external wiring is not connected, and the withstand voltage test point TP10 provided in the other one of the three-phase AC side terminals of the inverter unit 19 are connected via the external wiring. The terminal T11 and the terminal T12 to which the withstand voltage test point TP8 provided on the other one of the three-phase AC side terminals of the inverter unit 19 is connected via external wiring are provided.

Further, the second connector 22 is provided in one of the wiring (DC side wiring) between the terminal T13 to which the external wiring is not connected, the terminal T14 to which the external wiring is not connected, and the converter unit 18 and the inverter unit 19. Another one of the wiring (DC side wiring) between the terminal T15 to which the withstand voltage test point TP6 is connected via the external wiring, the terminal T16 to which the external wiring is not connected, and the converter unit 18 and the inverter unit 19. Withstand voltage test provided at the terminal T17 to which the withstand voltage test point TP7 provided in the above is connected via external wiring, and the other one of the wiring (DC side wiring) between the converter unit 18 and the inverter unit 19 The point TP5 includes a terminal T18 connected via external wiring.

In the above configuration, the terminals T1 to T6 are provided in the first sub-connector module 22A constituting the second connector 22, and the terminals T7 to T12 are provided in the second sub-connector module 22B constituting the second connector 22. The terminals T13 to T18 are provided in the third sub-connector module 22C constituting the second connector 22.

Next, the configuration of the plug 30 will be described.
FIG. 2 is an explanatory diagram of the wiring state inside the plug when viewed from the same direction as that of FIG.
The plug 30 configured as a connector device having a male type connection terminal includes terminals P1 to P18 which are male type connection terminals, and these terminals P1 to P18 are P1 → P4 → P2 → P5 → P3. → P6 → P7 → P10 → P8 → P11 → P9 → P12 → P13 → P16 → P14 → P17 → P15 → P18 One terminal as a soundness check connection terminal P1 and the other terminal for soundness check All the other terminals P2 to P17 are connected to the terminal P18 as a single stroke by the wiring LN.

In the above configuration, terminals P1 to P6 are provided in the first sub-plug module (first sub-module) 30A constituting the plug 30, and terminals P7 to P12 are the second sub-plug module (first sub-plug module) constituting the plug 30. 2 submodules) 30B, and terminals P13 to P18 are provided on the third subplug module (third submodule) 30C constituting the plug 30.

FIG. 3 is an explanatory diagram of a wiring state during normal operation of a railway vehicle.
FIG. 4 is an explanatory diagram of the wiring state at the time of the withstand voltage test of the railway vehicle.
During normal operation, the plug 30 is connected to the first connector 21 as shown in FIG.

As shown in FIG. 3, the first connector 21 is provided with a pair of check connection terminals C1 and C2 of the VCB control circuit 20, and the VCB control circuit 20 is provided with the check connection terminal C1 and the check connection. It is said that it can operate when it is in a conductive state with the terminal C2.

When the plug 30 is connected to the first connector 21, the terminal P1 of the plug 30 is connected to the check connection terminal C1 of the VCB control circuit 20, and the terminal P18 of the plug 30 is connected to the check connection terminal C2. Be connected.

As described above, between the terminal P1 as the connection terminal for soundness check on one side and the terminal P18 as the connection terminal for soundness check on the other side, all the other terminals P2 to P17 are drawn by wiring LN. Since they are connected in a shape, if there is no disconnection in any of the wiring LNs of the plug 30, the pair of check connection terminals C1 and the check connection terminals C2 of the VCB control circuit 20 will be in a conductive state. , The VCB control circuit 20 can shift to an operable state.

On the other hand, if there is a disconnection at any part of the wiring LN of the plug 30, the pair of check connection terminals C1 and the check connection terminal C2 of the VCB control circuit 20 are in a non-conducting state. The VCB control circuit 20 is in a state in which it cannot shift to a state in which it can operate.

Therefore, if the VCB control circuit 20 can be moved to an operable state, it can be seen that at the same time, there is no disconnection in any of the wiring LNs of the plug 30 and the soundness of the plug 30 is ensured.
As described above, it is possible to check and confirm the soundness of the plug 30 every time the VCB control circuit 20 shifts to an operable state during normal operation of the railway vehicle.

Next, the operation during the withstand voltage test will be described again with reference to FIG.
At the time of the pressure resistance test, as shown in FIG. 4, the plug 30 whose soundness has been confirmed by the above procedure is connected to the second connector 22.

In this state, all the terminals T1 to T18 of the second connector 22 are electrically connected by the wiring LN of the plug 30. As a result, the withstand voltage test points TP1 to TP10 are also electrically connected.

Therefore, the withstand voltage test device 40 is configured at a location that can be electrically connected to any of the withstand voltage test points TP1 to TP10 (in the case of the example of FIG. 4, one of the three-phase AC output terminals of the inverter unit 19) for inspection. A location where an inspection power supply 41 to which a voltage can be applied is connected and can be electrically connected to any of the withstand voltage test points TP1 to TP10 (in the case of the example of FIG. 4, the three-phase AC output terminal of the inverter unit 19). The withstand voltage test device 40 is configured in the other one), and the voltage detector 42 for detecting the inspection voltage is connected. As a result, by replacing the plug 30 with the second connector 22, each part of the main power conversion device required for the withstand voltage test can be short-circuited, and the withstand voltage of the entire circuit can be confirmed by measuring at one point.

As described above, according to the present embodiment, the soundness of the plug 30 can always be confirmed during normal operation of the railway vehicle, and a highly reliable test can be performed when the plug 30 is used for the pressure resistance test.

In the above description, a plug having a male type connection terminal has been described as an example of the connector device, but it can also be configured as a receptacle having a female type connection terminal.
In the above description, between the terminal P1 as the soundness check connection terminal and the other terminal P18 as the soundness check connection terminal, all the other terminals P2 to P17 are written in a single stroke by the wiring LN. However, at least all the terminals used for the withstand voltage test between the terminal P1 as the connection terminal for soundness check and the terminal P18 as the connection terminal for soundness check on the other side are drawn in a single stroke by wiring LN. If they are connected, the same effect can be obtained.

More specifically, among the terminals T1 to T18 of the second connector 22 shown in FIG. 3, the terminals of the second connector 22 connected to the withstand voltage test points TP1 to TP10, that is, the terminals T2, T3, T5, At least the terminals P2, P3, P5, P6, P9, P11, P12, P15, P17 (, T18) of the corresponding plug 30 so that T6, T9, T11, T12, T15, T17 (, T18) can be connected. The same effect can be obtained by connecting the terminal P1 as the connection terminal for soundness check and the terminal P18 as the connection terminal for soundness check in an arbitrary order by wiring LN. It becomes possible.

In the above description, the plug 30 is composed of three sub-plug modules 30A to 30C, but the plug 30 may be integrally configured or may be composed of a plurality of (two or four or more) sub-plug modules. It is also possible to.
Similarly, in the above description, the second connector 22 is composed of three sub-connector modules 22A to 22C, but the second connector 22 may be integrally configured or a plurality of (two or four or more) subs. It is also possible to configure it with a plug module (sub-connector module).

Although some embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other embodiments, and various omissions, replacements, and changes can be made without departing from the gist of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are also included in the scope of the invention described in the claims and the equivalent scope thereof.

For example, in the above description, in order to check the soundness, the case where the device to which the plug 30 is connected during normal operation is the VCB control circuit 20 is taken as an example. Any device can be applied as long as it is a vehicle device and the soundness of the plug 30 can be confirmed by utilizing the continuity of the wiring LN in the plug 30. Specifically, it is preferable to use the plug 30 for the control circuit and the power supply circuit of the vacuum circuit breaker to which the external power is supplied, which can cut off the supply of the external power supply at the time of disconnection. The same can be applied to a controller or the like that controls the inverter unit 19.

Further, in the above description, the case where the power is supplied from the AC overhead line has been described as an example, but the same application can be applied to the case where the power is supplied from the DC overhead line.

30 plug (connector device)
LN wiring P1, P18 terminals (connection terminals for soundness check)
P2, P3, P5, P6, P9, P11, P12, P15, P17 terminals (voltage test terminal: pressure resistance test connection terminal)
P4, P7, P8, P10, P13, P14, P16 terminals (connection terminals)

Claims (4)

A railroad vehicle equipped with a vacuum circuit breaker control circuit, a normal time connector having a pair of check connection terminals of the vacuum circuit breaker control circuit, and a pressure resistance test connector having a plurality of terminals connected to a plurality of pressure resistance test points. It is a connector device that is electrically connected to the power conversion device of
A pair of soundness check connection terminals connected to the pair of check connection terminals,
A connection terminal including a plurality of withstand voltage test connection terminals connected to the withstand voltage test connector and connected to the corresponding withstand voltage test points, respectively.
Between the soundness check connection terminals, wiring in which at least all the withstand voltage test connection terminals among the connection terminals are connected in a single stroke.
Connector device with. In the wiring, all the connection terminals are connected in a single stroke between the pair of connection terminals for soundness check.
The connector device according to claim 1. A plurality of submodules having at least one of the soundness check connection terminal and the connection terminal are provided.
The connector device according to claim 1 or 2. It is configured as a plug with a male connection terminal or a receptacle with a female connection terminal.
The connector device according to any one of claims 1 to 3.

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