JPS5827647B2 - Disc winding for stationary induction appliances - Google Patents

Description

[Detailed description of the invention] The present invention relates to a disk winding for stationary induction appliances.

Disc windings, which have high mechanical strength, are often used as windings in ordinary transformers.

However, the disk winding has the drawback that the opposing area of the unit coils constituting it is relatively small, and the number of unit coils is large, so the series capacitance between the unit coils is small, and the characteristics against impact voltage are not good.

For this reason, high series capacitance windings with increased series capacitance of the windings are employed in disk windings of high voltage classes in order to improve the potential distribution with respect to the impact voltage.

This high series capacitance winding is one in which the series capacitance K is increased so that the ratio α-JC/K between the ground capacitance C of the winding and the series capacitance is as small as possible. As shown in FIG. 2, a twin coil is formed by winding two parallel-connected first and second wires so that their potentials are different from each other.

That is, the two first electric wires A and the second electric wire are arranged side by side and sequentially wound from unit coil A to unit coil B, and then transferred to unit coils A and B again, where the previously wound electric wires A and B are respectively wound. An interleaved winding having a so-called high series capacitance, which is sandwiched between windings and having a large potential difference between adjacent winding conductors, is employed.

However, this winding is not only complicated to wind, but also
For connections between unit coils, connecting wires 10 to 14 are required, which is twice as many as the number of parallel wires, and return connecting wires 15° and 16 equal to the number of wires are also required, so cutting and connecting these wires is difficult. As the number of wires increases, the winding work becomes increasingly complicated and requires a large number of man-hours.

The present invention has been made in view of the above-mentioned drawbacks, and consists of a disk winding made of parallel wires, a first wire a and a second wire S, whose winding start ends are shifted from each other, thereby making the winding work easier. The object of the present invention is to provide a disk winding wire that is simple and has excellent potential distribution characteristics against impact voltage.

Next, embodiments of the present invention will be described based on FIGS. 2 to 5.

First, FIG. 2 shows a disk winding according to the first embodiment of the present invention, and the numbers of the first electric wire a and the second electric wire S connected in parallel are as follows.
It represents the number of turns of the wire.

The line end side of the winding consists of a combination of winding section I and winding section ■. First, winding section I will be explained.

This winding section I constitutes a high series capacitance winding by overlapping the first electric wire a and the second electric wire S, and includes a first twin coil consisting of unit coils A and B, and a unit coil A and B. It consists of a second twin coil consisting of coils C and D.

The first electric wire a is continuously wound from the first twin coil side to the second twin coil side (unit coil A-+B-) (1) D), and the second electric wire a is continuously wound around the second twin coil side (unit coil A-+B-) (1) D). 1st from the coil side
Twin coil side (unit coil C→D-+A-+B')
It has been rolled back up.

In other words, the first electric wire a is sequentially wound from the conductor 1a of the unit coil A connected to the line end, transferred from the conductor 4a to the conductor 5a of the unit coil B via the connecting wire 101, and then sequentially wound around the unit coil B. is wound to the conductor 8a, then transferred to the conductor 9a of the unit coil C via the connecting wire 102, wound in sequence to the unit coil C to the conductor 12a, and then transferred to the conductor 9a of the unit coil D via the connecting wire 103. Moving on to the conductor 13a, this unit coil D is wound in sequence up to the conductor 16a.

Further, a second electric wire is sandwiched and wound between each turn of the first electric wire a, and the second electric wire is sandwiched and wound between turns of the first electric wire conductors 9a and 10a of the unit coil C. Starting from the conductor 1b, which is connected to the end via the connecting wire 104, it is successively sandwiched and wound between the turns of the first electric wire a of the unit coil C, and connected to the unit coil D via the connecting wire 105 from the conductor 4b. Moving on to the conductor 5b, it is inserted between the turns of the first electric wire a of the unit coil D and wound, and the connecting wire 106 is connected to the conductor 8b.
The conductor 9b of the unit coil A is transferred to the conductor 9b of the unit coil A, and then the conductor 1 is sandwiched and wound between the turns of the first electric wire a of the unit coil A.
2b to conductor 13 of unit coil B via connecting wire 107.
Moving to step b, the unit coil B is sandwiched between turns of the first electric wire a and wound to reach the conductor 16b.

and unit coils A and B forming a first twin coil,
and the connecting wires 101 and 108, and 103 and 10 connecting between the unit coils C and D forming the second twin coil.
In step 5, the inner and outer diameter positions of the conductors are exchanged so that there is no difference in winding length between the first electric wire a and the second electric wire.

In the winding section I consisting of the first and second twin coils as described above, the second electric wire is connected from the unit coil D of the second twin coil to the unit coil A of the first twin coil. Since the windings are reversely wound, there is a potential difference between the windings of the first electric wire a and the second electric wire S, which is about two coils (8 to 9 turns), and the series capacitance increases. is increasing.

Next, the winding section (2) will be explained.

Winding section ■ consists of separate high series capacitance windings consisting only of the first electric wire a and only the second electric wire A, and the second
A third twin coil consisting of unit coils E and G around which the electric wire is wound, and unit coils F and H around which the first electric wire a is wound.
Furthermore, a unit coil F of the fourth twin coil is interposed between unit coils E and G of the third twin coil.

That is, the conductor 16a of the unit coil D of the second twin coil in the winding section I and the fourth conductor in the winding section I
The conductor 17a of the unit coil F of the twin coil is connected via a connecting wire 107.

On the other hand, the conductor 16b of the unit coil B of the first twin coil in section I and the conductor 17b of the unit coil E of the third twin coil in winding section H are connected via a connecting wire 108. .

The first electric wire a starts from the conductor 17a, winds around the unit coil F, connects the conductor 20a to the connecting wire 109, connects the conductor 20a of the unit coil H to the conductor 21a of the unit coil H, and connects the conductor 20a of the unit coil H to the conductor 21a of the unit coil H. The unit coil H is wound, and from the conductor 24a, it returns to the original unit coil F via the connecting wire 110, reaches the conductor 25a, and is sandwiched and wound between the turns of the first electric wire a of this unit coil F. Conductor 28a
It then reaches the conductor 29a of the unit coil H via the connecting wire 111, and is sandwiched and wound between the turns of the first electric wire a of this unit coil H to reach the conductor 32a.

On the other hand, the second electric wire starts from the conductor 17b and starts from the unit coil E.
The conductor 20b is wound to the conductor 21b of the unit coil G via the connecting wire 112, and this unit coil G is wound, and the unit coil G is returned to the original unit coil E via the connecting wire 113 from the conductor 24b to the conductor 25b. The second conductor of this unit coil E is sandwiched between the turns of llb and wound to form the conductor 2.
8b, and then reaches the conductor 29b of the unit coil G via the connecting wire 114, and is sandwiched and wound between the turns of the second electric wire of this unit coil G to reach the conductor 32b.

The unit coils G and H described above are the conductor 32a1 in the unit coil H and the conductor 32b in the unit coil G.
A connecting wire is connected to each of the two connecting wires, and these connecting wires are connected to each unit coil forming the next winding section I or to a unit coil forming another winding section to form the required winding. .

In the first embodiment described above, there is a potential difference of 8 tanns between the first electric wire a and the second electric wire S in the winding section I and the river.

In addition, the potential difference between unit coils is a maximum of 15 turns in winding section I, and in the winding section there is a potential difference of 8 turns between wires and between coils. The series capacitance K of the line is made large.

Next, FIG. 3 shows a disk winding according to a second embodiment of the present invention, in which, instead of the winding section (■) in the first embodiment,
This is constructed by connecting the winding section ■, which is composed of two circuits and two unit coils, and the potential difference between the wound wires is equal to one coil, to the same winding section I as in the case of Fig. 2 above. .

Note that since the winding section I is the same as in Fig. 2,
By assigning the same reference numerals as in FIG. 2, the explanation thereof will be omitted.

In FIG. 3, the conductor 16a of the first electric wire a of the unit coil D forming the second twin coil and the conductor 16b of the second electric wire S of the unit coil B forming the first twin coil are respectively connected. The unit coils E and F are separately formed by the first electric wire a and the second electric wire A and F through the connecting wires 201 and 202, respectively, thereby configuring the winding section (2).

That is, the unit coil F by the first electric wire a is connected to the connecting wire 20
1 is wound starting from conductor 17a connected to conductor 1 to conductor 20a, and then connected to conductor 17a and 18 via connecting wire 203.
It returns to the conductor 21a which is sandwiched and wound between the conductor 21a and the conductor 24a.

On the other hand, the second electric wire interleaving unit coil E is wound starting from the conductor 17b connected to the connecting wire 202 to the conductor 20b, and then sandwiched between the conductors 17b and 18b via the connecting wire 204 and wound. Return to the rotating conductor 21a,
This leads to the conductor 24b.

The unit coils E and F described above have a connecting wire 205 connected to the conductor 24a of the unit coil F, and a connecting wire 20b connected to the conductor 24b of the unit coil E,
These two connecting wires are connected to each unit coil forming the next winding section I or to the unit coil forming another winding section to form a required winding.

Various winding configurations can be provided by combining the winding sections I, (2), and (2) described above and arranging them on the line end side, and examples thereof will be shown next.

First of all, FIG. 4 shows a third embodiment of the present invention, in which a portion near the end of the winding that is directly exposed to the impulse voltage near the end of the line is constructed by a combination of the winding section (■) and the winding section (■). , in the part far from the line end, the first electric wire a and the second electric wire are connected in parallel.
It consists of a combination of winding sections (2), which are made by overlapping wires and continuously winding them.

As a result, the combination of winding section (2), which is simple in winding work, can significantly reduce the number of winding steps and improve the shock voltage characteristics.

Next, FIG. 5 shows a fourth embodiment of the present invention, in which the first electric wire a and the second electric wire
Instead of continuously winding the wires by overlapping them together, it is constructed by connecting the winding section V, which is made by winding a single wire with a cross-sectional area that is the sum of the cross-sectional areas of both types of wire. be.

As a result, compared to the third embodiment, the winding can be made simpler and the number of man-hours required for winding can be reduced.

Also, if a transposed wire is used in the winding section V, eddy current losses can be reduced.

As is clear from the above description, the winding having the structure of the present invention has various effects as described below.

■ A twin coil (
Since the first and second twin coils are formed by sandwiching and winding the second wire, which is shifted by 2 unit coils, a large potential difference can be created between each winding and between each unit coil. Therefore, the series capacitance K is increased and the potential distribution characteristics with respect to the impact voltage are improved.

For example, in winding section I, there is a potential difference of two coils (potential difference 8 to 9) between the windings, and a maximum of four coils' worth (potential difference 15) between the coils.

In addition, in winding category ■, there is a potential difference between two coils (second
In the figure, there is a potential difference of 8), and in the winding section ■, there is a potential difference of one coil between the windings (potential difference of 4 in Figures 3 to 5), and there is a potential difference of 2 or 1 coil between the coils ( In FIG. 2, the potential difference is 8, and in FIGS. 3 to 5, the potential difference is 4).

Moreover, there is a potential difference of 4 coils between winding sections I and ■, and between ■ and ■ (potential difference 15 in Fig. 2, potential difference 16 in Figs. 3 to 5). The series capacitance is larger than that of a conventional winding (in FIG. 1, the winding amount potential difference is 4 and the potential difference between the coils is 11), resulting in good potential distribution characteristics and improved shock resistance characteristics.

■ In winding class ■, only the second wire a needs to be reconnected, but since the first wire a is continuous, there is no need to reconnect it, so the winding in winding class ■ or Even when combined, the winding process is simpler than conventional winding.

■ In winding sections I, If, and ■, the upper and lower positions (inside and outside in the radial direction) of the first electric wire a and the second electric wire A are swapped in both the inner and outer transition parts, so the impedance of both is almost the same. As a result, almost no circulating current flows between the two, which can reduce copper loss.

■ In the winding shown in Figure 3, the winding division ■ is 1 between the turns.
Since it has only the potential difference for the coils, the series capacitance is somewhat smaller than that of the winding shown in Figure 2, but since the number of coils in the complicated winding sections is halved, the winding man-hours are reduced by half. It has the advantage that it requires fewer windings than the one shown in Figure 2.

(2) In general, the stress caused by the shock voltage on the winding attenuates as it moves away from the line end, so windings with excellent shock voltage characteristics may be used at the line end in areas far from the line end.

Therefore, in the winding shown in FIG. 4, the winding of the winding section (2), which requires easy winding work, is combined in a portion away from the line end to further reduce the number of winding steps compared to the winding shown in FIG. 3.

In FIG. 5, since the winding section (2) is a single wire having the same cross-sectional area as the winding section (2), there is no dislocation between the upper and lower wires, and the number of winding steps can be further reduced.

In this case, using a transposed wire in the winding section (2) will also help reduce eddy current loss at the ends of the winding.

As described above, the winding with the structure of the present invention has better shock voltage characteristics than the conventional large-capacity high series capacitance winding with a large winding cross-section, and is a static filter conductor that is easy to wind. This provides a dexterous disk winding.

[Brief explanation of the drawing]

Fig. 1 is a connection diagram showing a conventional disk winding with high series capacity, Fig. 2 is a connection diagram of a disk winding showing a first embodiment of the present invention, and Fig. 3 is a connection diagram showing a second embodiment of the present invention. FIG. 4 is a connection diagram of a disk winding showing a third embodiment of the present invention, and FIG. 5 is a connection diagram of a disk winding showing a fourth embodiment of the present invention. Connection diagram. 101 to 114, 201 to 206 are connecting wires, a is a first electric wire, b is a second electric wire, A-H are unit coils, ■■1, IV, and V are windings.

Claims (1)

[Scope of Claims] 1. In a disk winding formed by winding two circuits of a first electric wire and a second electric wire consisting of a plurality of electric wires in parallel, the first and second electric wires are wound in an overlapping manner to form the first and second electric wires. 2 twin coils are formed, the first electric wire is continuously wound from the first twin coil side to the second twin coil side, and the second electric wire is wound continuously from the second twin coil side to the first twin coil side. A winding section (2) is formed by returning to the forming coil side and winding it, allowing the winding end of the second electric wire in the first twin coil to be drawn out, and connecting the middle of the second electric wire between the windings of the second electric wire. A third twin coil made of a pair of disc-shaped unit coils is formed by sandwiching and winding the coil, and a winding end of the first electric wire in the second twin coil is drawn out, and a winding end of the first electric wire is drawn out. A fourth twin coil consisting of a pair of disc-shaped unit coils is formed by sandwiching the midway between the turns of this first electric wire and winding it, and then one disc-shaped coil of the fourth twin coil is further wound. A winding section (2) is provided in which a unit coil is positioned between a pair of disk-shaped unit coils of a third twin coil, and the winding section I and winding section (2) form a set, and this set 1. A disk winding for a stationary induction electric appliance, comprising at least one winding section I located on the line end side. 2. In a disk winding formed by winding two circuits of a first electric wire and a second electric wire consisting of a plurality of electric wires in parallel, the first and second electric wires are wound in layers to form the first and second twin coils. At the same time as forming, the first electric wire is continuously wound from the first twin coil side to the second twin coil side, and the second electric wire returns from the second twin coil side to the first twin coil side. a winding section I formed by winding a second winding section I in said first twin coil;
A disc-shaped unit coil formed by leading out the winding end of the electric wire and sandwiching and winding the middle of the second electric wire between turns of the second electric wire, and a first electric wire in the second twin coil. A winding section (I) consisting of a disk-shaped unit coil formed by leading out the end of the winding and winding the first electric wire by sandwiching the middle of the first electric wire between turns of the first electric wire; A disk winding for a stationary induction electric appliance, characterized in that the winding section (1) and the winding section (2) form one set, and at least one such set is provided, and the winding section I is located on the line end side.