JP4972808B2 - Induction electric winding, manufacturing method thereof, and winding method of induction electric winding - Google Patents

Description

  The present invention relates to a winding of an induction electric appliance such as a power transformer or a reactor and a winding method thereof, and more specifically, an induction electric winding having improved surge voltage characteristics and a winding thereof with a small number of winding work steps. Regarding the method.

  In windings used for induction transformers such as power transformers and reactors, continuous disk windings are widely used because of the advantages of high mechanical strength and fewer manufacturing steps.

  The continuous disk winding is obtained by laminating a disk-shaped coil obtained by winding an insulation-coated conductor in a disk shape in the radial direction in the axial direction. In this continuous disk winding, the odd-numbered disk-shaped coil has the conductor wound from the outer diameter side to the inner diameter side, and the even-numbered disk coil has the conductor wound from the inner diameter side to the outer diameter side. ing. The disk-shaped coils adjacent to each other along the axial direction form a coil pair. In each coil pair, the winding end of the conductor of the odd-numbered disk-shaped coil continuously crosses the inner diameter side to the lower part via the crossing section. Crossing is the beginning of the winding of the even-numbered disk-shaped coil conductor. And the winding end of the conductor of the even-numbered disk-shaped coil continuously crosses further to the lower part through the crossing part on the outer diameter side, and becomes the winding start of the conductor of the odd-numbered disk-shaped coil. .

  However, the continuous disk winding is excellent in mechanical strength and productivity, but the higher the line voltage connected to the winding, the more the disk is subjected to a surge voltage such as a lightning impulse. There is a drawback that an overvoltage is generated between the coil coils and dielectric breakdown is likely to occur.

  In order to improve such a defect, it is necessary to equalize the initial potential distribution of each disk-shaped coil when a surge voltage is applied to the line terminal. The initial potential distribution of each disk-shaped coil at the time of applying a surge voltage is almost determined by the capacitance of the disk-shaped coil, and the voltage applied between the disk-shaped coils on the line terminal side is the highest and is separated from the line terminal side. Accordingly, the voltage applied between the disk coils becomes smaller.

  Here, when the electrostatic capacitance between the ground of the disk-shaped coil is C, the serial capacitance is K, and the square root of C / K is α, the initial potential distribution of the disk-shaped coil at the time of applying the surge voltage is It depends on the value of α. That is, as the value of α increases, the voltage applied between the disk-shaped coils increases. Therefore, by increasing the series capacitance K of the disk-shaped coils as much as possible and making the value of α as small as possible, The initial potential distribution of the coil is improved.

  Therefore, recently, as disclosed in, for example, Japanese Patent Application Laid-Open No. 7-220953 (Patent Document 1), a coil having a large number of turns can be obtained by winding two windings as a pair and interposing them with each other. Interleaved windings have been studied in which the gaps are electrostatically coupled to equivalently increase the series capacitance between the coils. However, since this interleaved winding is wound with a conductor interlaced, it is necessary to cut the conductor for each pair of windings, and after completing the winding of the pair of windings, reconnect them. In short, it was a factor that caused the price of windings to soar.

  Therefore, as means for increasing the series capacitance of the winding more simply, for example, Japanese Patent Application Laid-Open No. 61-177707 (Patent Document 2), Japanese Patent Application Laid-Open No. 2003-332144 (Patent Document 3), Japanese Patent Laid-Open No. 134825 (Patent Document 4) discloses a configuration in which a shield conductor for improving potential distribution is partially wound around a normal continuous disk winding.

According to this, the shield conductor is wound at least one turn or more in at least one pair of disk-shaped coils on the line terminal side, and the shield conductor is connected between each pair of disk-shaped coils by the shield conductor. Yes. As a result, the voltage generated between the pair of disk-shaped coils comes close to each other through the shield conductor, so that the series capacitance of each disk-shaped coil is increased and the initial potential distribution is improved.
Japanese Patent Laid-Open No. 7-220953 JP-A 61-177707 JP 2003-332144 A Japanese Utility Model Publication No. 4-134825

  However, in the configuration in which the shield conductor is wound around the continuous disk winding as described above, the conductor constituting the disk-shaped coil in each coil pair and the shield conductor wound in the disk-shaped coil are both crossed. Since the winding is continuously performed through the portion, the winding direction of the conductor and the shield conductor may be reversed in either the even-numbered or odd-numbered disk-shaped coil.

  In this case, when the conductor is tightened after winding, the shield conductor is loosened because a stress opposite to the winding direction acts from the conductor, and there is a problem that a gap is formed between the shield conductor and the conductor. there were. This gap cannot increase the series capacitance of each disk-shaped coil, and it is difficult to improve the initial potential distribution of the dielectric winding.

  It is possible to reduce the gap between the conductor and the shield conductor by rewinding the conductor and the shield conductor again. However, repeating the winding operation may damage the insulating coating of the conductor and reduce the number of manufacturing steps. It caused a new problem of increasing.

  On the other hand, as in the above-mentioned Japanese Utility Model Laid-Open No. 4-134825 (Patent Document 3), if the transition conductor of the shield conductor is provided on the inner diameter side of the disk-shaped coil, the conductor in each disk-shaped coil. It is possible to make the winding direction of the conductor and the shield conductor coincide with each other. There is a problem that it is difficult to wind because it is necessary to perform the winding work while holding it integrally.

  Therefore, the present invention has been made to solve such a problem, and an object of the present invention is to provide an induction winding having improved surge voltage characteristics with a small number of winding work steps.

  Another object of the present invention is to provide a winding method of an induction winding having improved surge voltage characteristics with a small number of winding work steps.

According to one aspect of the present invention, a method of manufacturing an induction winding includes a step of forming a first disk-shaped coil by winding an insulation-coated conductor in a radial direction, and a first disk Winding the first shield conductor for at least one turn so as to be in the same radial direction with respect to the coil-shaped coil, and starting winding by continuously crossing the winding end of the conductor in the first disk-shaped coil Forming the second disk-shaped coil by winding in the radial direction as follows, and the second shield conductor so as to be in the same direction along the radial direction with respect to the second disk-shaped coil. A step of winding at least one turn, a step of electrically connecting the ends of the first and second shield conductors with a connecting member, and a coil pair comprising a first disk-shaped coil and a second disk-shaped coil the and a step of stacking a plurality

  According to another aspect of the present invention, there is provided a method for winding an induction winding in which a plurality of coil pairs in which an insulation-coated conductor is formed in a disk shape in the radial direction, and the conductor is formed in a diameter. Forming the first disk-shaped coil by winding in a direction, and at least one first shield conductor so as to be in the same direction along the radial direction with respect to the first disk-shaped coil. A step of winding, a step of forming a second disk-shaped coil by continuously winding the end of winding of the conductor in the first disk-shaped coil and winding it in the radial direction as a winding start; A step of winding the second shield conductor for at least one turn so as to be in the same direction along the radial direction with respect to the disk-shaped coil, and electrically connecting the ends of the first and second shield conductors with a connecting member Step to connect Equipped with a.

  According to the present invention, it is possible to improve the surge voltage characteristics of the induction winding with a small number of winding work steps.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the drawings, the same reference numerals indicate the same or corresponding parts.

  FIG. 1 is a perspective view showing an external appearance of an induction electric machine having induction electric windings according to an embodiment of the present invention. FIG. 2 is a partial cross-sectional view taken along the line II-II of FIG. In the present embodiment, an inner iron type transformer will be described as an example of an induction electric machine.

  Referring to FIG. 1, inner iron transformer 100 includes an iron core 10, and low voltage winding 20 and high voltage winding 30 wound around iron core 10. The low voltage winding 20 and the high voltage winding 30 have the low voltage winding 20 wound around the iron core 10 in the radial direction and the high voltage winding 30 wound around the outside in the radial direction.

  As shown in FIG. 2, each of the low-voltage winding 20 and the high-voltage winding 30 includes a disk-shaped coil 300 in which an insulation-coated coil conductor is wound in the shape of a disk in the radial direction. It is configured by stacking.

FIG. 3 is an enlarged cross-sectional view of the high-voltage winding 30 in FIG.
Referring to FIG. 3, a high-voltage winding 30 is wound around the outer periphery of an insulating cylinder 50 serving as a winding cylinder. The left side of this figure is the inner diameter side, and a plurality of disk-shaped coils 300 wound in a disk shape in the radial direction are laminated in the axial direction. The numbers in the disk-shaped coil 300 indicate the number of turns (number of turns) of the coil conductor L, and the load current flows in the order of the numbers.

  In FIG. 3, for the sake of simplicity, among the plurality of disk-shaped coils 300, the first-layer disk-shaped coil 300 (first section) to the third-layer disk-shaped coil 300 (third section). )It is shown. In the fourth and subsequent layers of the disk-shaped coil 300 (fourth section) (not shown), winding is performed in the same manner.

  That is, in the first section, the winding start of the coil conductor L is connected to the line terminal U, and the coil conductor L is wound six times from the outer diameter side to the inner diameter side. Then, the winding end of the coil conductor L of the first section continuously crosses the lower side via the crossing portion 40a across the inner diameter side, and becomes the start of winding of the coil conductor L of the second section. In the second section, the coil conductor L is wound six times from the inner diameter side to the outer diameter side. The end of winding of the coil conductor L continuously extends further downward through the outer diameter side via the crossing portion 40b, and is the start of winding of the coil conductor L in the third section. In this way, the first section and the second section form a coil pair, and a plurality of the coil pairs are stacked.

  Further, in each coil pair, a portion having a large voltage difference between the adjacent disk coils 300, that is, a coil conductor L of the first turn of the first section and a coil conductor L of the twelfth turn of the second section. In order to reduce the voltage difference and the voltage difference between the coil conductor L of the second turn of the first section and the coil conductor L of the 11th turn of the second section, the coil conductor L of the first section is set to the inner diameter from the outer diameter side. One end of the shield conductor S is wound two turns in the middle of winding toward the side, and the other end of the shield conductor S is wound from the inner diameter side toward the outer diameter side with the coil conductor L of the second section. I am trying to get two turns in the middle of the turn. As a result, the series capacitance of the disk-shaped coil is increased, and the voltage difference at the part is reduced.

  The shield conductor S may be wound around a part of the section located on the line terminal U side and the ground terminal side (not shown) in addition to the structure wound around each section. According to this configuration, since the voltage sharing for each section becomes equal, the initial potential distribution of the disk-shaped coil can be further improved.

(Conventional induction winding)
Here, as shown in FIG. 3, in the conventional induction winding, the shield conductor S is wound by two turns (represented by B and A in the drawing) from the outer diameter side in the first section by the method described later. Then, it moves to the second section via the crossover 40c, and the second section is also configured to be wound by two turns (represented by C and D in the drawing) from the outer diameter side. Therefore, in the second section, the winding direction of the coil conductor L (from the inner diameter side to the outer diameter side) and the winding direction of the shield conductor S (from the outer diameter side to the inner diameter side) are opposite to each other. Thereby, in the 2nd section, since the adhesiveness of the coil conductor L and the shield conductor S falls, the problem that the serial capacitance of a disk-shaped coil cannot be enlarged has arisen.

  In the following, a process for manufacturing a conventional induction winding will be described, and factors causing such a problem will be described in detail.

  4 to 9 are diagrams for explaining a manufacturing process of a conventional induction winding. The manufacturing process includes a total of 22 steps, and FIGS. 4 to 9 show sectional views of the windings for each step. In each figure, the left side shows the inner diameter side.

  First, referring to FIG. 4, in the first step, the shield conductor S is wound around the jig 60 serving as a winding cylinder by one turn. This is represented as B in the figure. To the first turn B of the shield conductor S, a shield conductor S (represented by A in the figure) having a length of one turn is connected to one end without being wound around the jig 60. Further, the shield conductor S (represented by C and D in the figure) having a length of two turns is connected to the other end of the first turn B of the shield conductor S in a state where it is not wound around the jig 60.

  Next, in the second step, the coil conductor L is wound around the outer diameter side of the shield conductor B at the first turn for one turn. This is represented as 1 in the figure. Further, in the third step, the shield conductor S having a length of one turn is wound around the outer diameter side of the coil conductor 1 of the first turn. This becomes the shield conductor A of the second turn.

  In the subsequent fourth to eighth steps, the coil conductor L is wound five turns on the outer diameter side of the shield conductor A in the second turn. That is, it is wound in the order of 2, 3, 4, 5, 6 from the inner diameter side.

Here, the winding operation is temporarily interrupted, and the coil conductor L and the shield conductor S are removed from the jig 60. Then, according to the ninth step to the fourteenth step, a rearrangement operation is performed for replacing the coil conductor L and the shield conductor S in the radial direction between the inside and the outside.

  Specifically, in the ninth step, first, the shield conductor 6 in the sixth turn located on the outermost diameter side is rearranged so as to be located on the innermost diameter side. Subsequently, the coil conductor 5 of the fifth turn, the coil conductor 4 of the fourth turn, and the coil conductor 3 of the third turn are rearranged in order from the inner diameter side (10th to 12th steps).

  Then, for the coil conductor 2 of the second turn and the coil conductor 1 of the first turn, as shown in the 13th step and the 14th step, the shield conductor A of the second turn and the shield conductor B of the first turn respectively. Sorted together.

  By performing the rearrangement work in this way, the coil conductor L is finally equivalent to being wound six turns from the outer diameter side toward the inner diameter side, and this disk coil is the first section (FIG. 3). ).

  Next, the winding operation of the second section is performed by passing the end of winding of the coil conductor L in the first section to the lower part via the crossover 40a. Specifically, as shown in the 15th to 20th steps, the coil conductor L is wound around the insulating tube 50 for 6 turns. That is, it is wound in the order of 7, 8, 9, 10, 11, 12 from the inner diameter side.

  At this time, in the 19th step and the 20th step, the coil conductor 11 of the 11th turn and the coil conductor 12 of the 12th turn are wound so as to provide a gap of a predetermined width between adjacent turns. In the 21st step, the shield conductors C and D for two turns described above are caught in these gaps.

  Specifically, when the second section disk-shaped coil 300 is moved toward the first section along the axial direction, the shield conductor S having a length of two turns connected to the shield conductor B of the first turn. Are first wound into a gap between the coil conductor 11 of the 11th turn and the coil conductor 12 of the 12th turn. At this time, the winding end of the shield conductor B of the first turn is passed to the gap via the crossover portion 40c. This becomes the shield conductor of the third turn, which is represented as C in the figure. Next, the shield conductor S is wound so as to be pushed into the gap between the eleventh turn coil conductor 11 and the tenth turn coil conductor 10. This becomes the shield conductor of the fourth turn, which is represented as D in the figure.

  Thus, the coil conductor L is wound six turns from the inner diameter side toward the outer diameter side, and the shield conductor S is partially wound. Finally, the coil conductor L is tightened to form the second section (FIG. 3) (22nd step).

  FIG. 10 is a diagram of the first and second sections of the conventional induction winding as viewed from above in the axial direction.

  Referring to FIG. 10, coil conductor L is wound from the outer diameter side to the inner diameter side in the first section by performing the series of steps described above, and then the coil conductor L of the second section is passed through the crossover portion 40a. It passes to the inner diameter side and is wound from the inner diameter side to the outer diameter side in the second section.

  On the other hand, when the shield conductor S is wound two turns from the outer diameter side to the inner diameter side in the first section, the shield conductor S is passed to the outer diameter side of the second section via the crossover portion 40c. Two turns are wound from the side toward the inner diameter side.

  Here, focusing on the second section, the coil conductor L is wound from the inner diameter side toward the outer diameter side, whereas the shield conductor S is wound from the outer diameter side toward the inner diameter side. It can be seen that the winding directions are opposite to each other. This is different from the first section in which both winding directions coincide.

  Therefore, in the second section, when the coil conductor L is tightened after winding, the shield conductor S is pulled and loosened in the direction opposite to the winding direction. In some cases, a gap may be formed. If there is a gap between the coil conductor L and the shield conductor S, the series capacitance cannot be increased sufficiently, and it is difficult to improve the initial potential distribution. Therefore, conventionally, when a gap is formed between the coil conductor L and the shield conductor S, the second section is wound again in order to make this gap as small as possible. This rewinding work damages the insulating coating of the coil conductor L and causes a significant increase in the number of manufacturing steps.

  Therefore, in order to eliminate such problems, in the induction winding according to the present invention, by using the winding method described below, the shield conductor can be wound around each disk-shaped coil with a simpler operation. .

(Induction electric winding of the present invention)
FIG. 11 is a diagram of first and second sections of the induction winding according to the embodiment of the present invention as viewed from above in the axial direction.

  Referring to FIG. 11, the coil conductor L is continuously wound between the first and second sections, similarly to the conventional induction winding shown in FIG. 10. Specifically, after the coil conductor L is wound from the outer diameter side to the inner diameter side in the first section, the coil conductor L is passed to the inner diameter side of the second section via the transition portion 40a, and from the inner diameter side in the second section. It is wound on the outer diameter side.

  On the other hand, the shield conductor S is wound discontinuously between the first and second sections without using a bridge portion. Specifically, the shield conductor S is wound two turns from the outer diameter side to the inner diameter side in the first section, and the outer diameter side end is drawn out from the outer periphery of the first section and opened. . In the second section, the shield conductor S is wound two turns from the inner diameter side toward the outer diameter side, and the outer diameter side end is drawn out from the second section and opened.

  That is, according to the present embodiment, the shield conductor S is divided into a plurality so as to correspond to a plurality of disk-shaped coils, each of which has the same winding direction as the coil conductor L for each disk-shaped coil. It is wound to become. In this respect, it differs from the conventional induction winding in which the winding direction of the coil conductor L and the shield conductor S is different in the second section.

  Furthermore, the outer diameter side ends opened for each disk-shaped coil are electrically connected via a connection member (not shown) after the winding operation is completed. As the connection member, for example, a brazing material such as solder, gold-tin, gold-germanium or the like is used, and end portions on the outer diameter side are brazed and joined. Therefore, the shield conductor S can be wound in a simpler operation as compared with the conventional induction winding in which the shield conductor S is continuously wound while performing the cross connection between the disk-shaped coils.

  12 to 17 are diagrams for describing the manufacturing process of the induction winding according to the embodiment of the present invention. The manufacturing process includes a total of 23 steps, and FIGS. 12 to 17 show sectional views of the windings for each step. In each figure, the left side shows the inner diameter side.

  First, referring to FIG. 12, in the first step, the shield conductor S is wound once around the jig 60 serving as a winding cylinder. This is represented as B in the figure. To the first turn B of the shield conductor S, a shield conductor S (represented by A in the figure) having a length of one turn is connected to one end without being wound around the jig 60. The shield conductor S is not connected to the other end of the first turn B of the shield conductor S, which is different from the conventional induction winding shown in the first step of FIG.

  Next, in the second step, the coil conductor L is wound around the outer diameter side of the shield conductor B at the first turn for one turn. This is represented as 1 in the figure. Further, in the third step, the shield conductor S having a length of one turn is wound around the outer diameter side of the coil conductor 1 of the first turn. This becomes the shield conductor A of the second turn.

  In the subsequent fourth to eighth steps, the coil conductor L is wound five turns on the outer diameter side of the shield conductor A in the second turn. That is, it is wound in the order of 2, 3, 4, 5, 6 from the inner diameter side.

  Here, the winding operation is temporarily interrupted, and the coil conductor L and the shield conductor S are removed from the jig 60. Then, according to the ninth step to the fourteenth step, a rearrangement operation is performed for replacing the coil conductor L and the shield conductor S in the radial direction between the inside and the outside.

  Specifically, in the ninth step, first, the shield conductor 6 in the sixth turn located on the outermost diameter side is rearranged so as to be located on the innermost diameter side. Subsequently, the coil conductor 5 of the fifth turn, the coil conductor 4 of the fourth turn, and the coil conductor 3 of the third turn are rearranged in order from the inner diameter side (10th to 12th steps).

  Then, for the coil conductor 2 of the second turn and the coil conductor 1 of the first turn, as shown in the 13th step and the 14th step, the shield conductor A of the second turn and the shield conductor B of the first turn respectively. Sorted together.

  By performing the rearrangement work in this way, the coil conductor L is finally equivalent to being wound six turns from the outer diameter side toward the inner diameter side. 3) is formed.

  Next, the winding operation of the second section is performed by passing the end of winding of the coil conductor L in the first section to the lower part via the crossover 40a. Specifically, first, as shown in the fifteenth to eighteenth steps, the coil conductor L is wound around the insulating tube 50 for four turns. That is, it is wound in the order of 7, 8, 9, 10 from the inner diameter side.

  Next, the shield conductor S is wound around the outer diameter side of the coil conductor 10 of the fourth turn (19th step). This is represented as D in the figure. A shield conductor S (represented by C in the figure) having a length of one turn is connected to one end D of the shield conductor S without being wound.

  Subsequently, in the twentieth step, the coil conductor L is wound around the outer diameter side of the shield conductor D of the first turn for one turn. This is represented as 11 in the figure. Further, in the 21st step, the shield conductor S having a length of one turn is wound around the outer diameter side of the coil conductor 11 of the eleventh turn. This becomes the shield conductor C of the second turn. Further, the coil conductor L is wound around the outer diameter side of the shield conductor C of the second turn for one turn. This becomes the coil conductor 12 of the 12th turn (22nd step).

  Finally, the outer diameter side ends of the shield conductor A of the first turn in the first section and the shield conductor C of the second turn in the second section are electrically connected by the connecting member 70 (23rd step). . In addition, although the shield conductor S is wound 2 turns between the turns of the coil conductor on the outer diameter side of each section, it can be increased or decreased as necessary.

  FIG. 18 is an enlarged cross-sectional view of the induction winding according to the embodiment of the present invention. As is clear from FIG. 18, according to the induction winding according to the present embodiment, the shield conductor S is wound in the same direction as the coil conductor L for each disk-shaped coil, and after winding, the outer peripheral side thereof The ends are electrically connected by the connecting member 70. Thereby, since the coil conductor L and the shield conductor S are brought into close contact with each other when the coil conductor L is tightened, it is possible to avoid the formation of a gap between them. As a result, it is possible to improve the surge voltage characteristics with a smaller number of winding work steps as compared with the conventional induction winding.

  Furthermore, since the shield conductor S can be electrically connected by brazing and joining the end portions on the outer peripheral side, an increase in work man-hours can be suppressed.

(Example of change)
In the present embodiment, the case where the induction coil winding is applied to a continuous disk winding has been described as a typical example, but the induction winding can also be applied to an interleave winding. FIG. 19 shows an enlarged cross-sectional view of an induction winding according to a modification of the present embodiment.

  Referring to FIG. 19, induction windings are wound around the outer periphery of an insulating cylinder 50 that is a winding cylinder. The left side of this figure is the inner diameter side, and a plurality of disk-shaped coils 300 wound in a disk shape in the radial direction are laminated in the axial direction. The numbers in the disk-shaped coil 300 indicate the number of turns (number of turns) of the coil conductor L, and the load current flows in the order of the numbers.

  Specifically, the coil conductor L is wound around the first layer disk-shaped coil 300 (first section), and is continuously passed through the inner diameter side to the lower part via the bridging portion 40d. And after winding the disk-shaped coil (2nd section) of the 2nd layer, coil conductor L moved to the 1st section via the crossing part 40e on the outer diameter side, and wound so that it might wind, It moves to a 2nd section via the crossover part 40f, and it winds so that it may wind, and forms a pair of interleave coil. Note that the end of winding of the coil conductor L continuously extends further downward through the outer diameter side via the crossing portion 40g, and becomes the start of winding of the coil conductor L in the third section.

  Even in such a configuration, the shield conductor S is wound in the same direction as the coil conductor L for each section by the above-described method, and the outer peripheral side ends are electrically connected by the connecting member 70 after the winding. Is done. Also in this modified example, the shield conductor S may be wound around some sections located on the line terminal U side and the ground terminal side (not shown), in addition to the structure wound around each section.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

It is a perspective view which shows the external appearance of an induction | guidance | derivation electric equipment provided with the induction | guidance | derivation electric appliance winding | winding according to this Embodiment. It is a fragmentary sectional view in II-II of Drawing 1. It is sectional drawing to which the high voltage | pressure winding in FIG. 2 was expanded. It is a figure for demonstrating the manufacturing process of the conventional induction | guidance | derivation electric wire winding. It is a figure for demonstrating the manufacturing process of the conventional induction | guidance | derivation electric wire winding. It is a figure for demonstrating the manufacturing process of the conventional induction | guidance | derivation electric wire winding. It is a figure for demonstrating the manufacturing process of the conventional induction | guidance | derivation electric wire winding. It is a figure for demonstrating the manufacturing process of the conventional induction | guidance | derivation electric wire winding. It is a figure for demonstrating the manufacturing process of the conventional induction | guidance | derivation electric wire winding. It is the figure which looked at the 1st and 2nd section in the conventional induction | guidance | derivation electric winding from the axial direction upper direction. It is the figure which looked at the 1st and 2nd section in the induction winding based on Embodiment of this invention from the axial direction upper direction. It is a figure for demonstrating the manufacturing process of the induction | guidance | derivation electric wire winding according to embodiment of this invention. It is a figure for demonstrating the manufacturing process of the induction | guidance | derivation electric wire winding according to embodiment of this invention. It is a figure for demonstrating the manufacturing process of the induction | guidance | derivation electric wire winding according to embodiment of this invention. It is a figure for demonstrating the manufacturing process of the induction | guidance | derivation electric wire winding according to embodiment of this invention. It is a figure for demonstrating the manufacturing process of the induction | guidance | derivation electric wire winding according to embodiment of this invention. It is a figure for demonstrating the manufacturing process of the induction | guidance | derivation electric wire winding according to embodiment of this invention. It is sectional drawing to which the induction winding according to the embodiment of the present invention is enlarged. It is sectional drawing to which the induction winding according to the modified example of embodiment of this invention was expanded.

Explanation of symbols

  10 Iron core, 20 Low voltage winding, 30 High voltage winding, 40a-40g Crossing part, 50 Insulating cylinder, 60 Jig, 70 Connecting member, 100 Inner iron type transformer, 300 Disc coil, L coil conductor, S shield Conductor, U line terminal.

Claims (6)

Forming a first disk-shaped coil by winding an insulation-coated conductor in a radial direction ;
Winding the first shield conductor for at least one turn so as to be in the same radial direction with respect to the first disk-shaped coil ;
Forming a second disk-shaped coil by continuously winding the end of winding of the conductor in the first disk-shaped coil and winding it in a radial direction as a winding start ;
Winding the second shield conductor for at least one turn so as to be in the same direction along the radial direction with respect to the second disk-shaped coil ;
Electrically connecting the ends of the first and second shield conductors with a connecting member ;
And a step of laminating a plurality of coil pairs composed of the first disk-shaped coil and the second disk-shaped coil . The step of electrically connecting the ends of the first and second shield conductors with a connecting member includes an outer diameter side end of the first shield conductor and an outer diameter side end of the second shield conductor. The method for manufacturing an induction winding according to claim 1, wherein: In the coil pair, the first disk-shaped coil is formed by winding the conductor from the outer diameter side to the inner diameter side, and the second disk-shaped coil is wound from the inner diameter side to the outer diameter side. The method of manufacturing an induction winding according to claim 1 or 2, wherein the induction winding is rotated. The coil pair allows the conductor to cross between the first and second disk-shaped coils at a position on the outer diameter side, and crosses between the first and second disk-shaped coils with respect to the inner diameter side transition. The method of manufacturing an induction winding according to claim 1 or 2, wherein the induction winding has an interleave configuration. An induction winding manufactured using the method for manufacturing an induction winding according to claim 1 . A method of winding an induction winding in which a plurality of coil pairs in which a conductor with insulation coating is wound in a disk shape in the radial direction is laminated,
Forming a first disk-shaped coil by winding the conductor in a radial direction;
Winding the first shield conductor at least one turn so as to be in the same direction along the radial direction with respect to the first disk-shaped coil;
Forming the second disk-shaped coil by continuously winding the end of the conductor in the first disk-shaped coil and winding it in the radial direction as the start of winding;
Winding the second shield conductor for at least one turn so as to be in the same direction along the radial direction with respect to the second disk-shaped coil;
A step of electrically connecting ends of the first and second shield conductors with a connecting member.

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