JPS61191246A - Stator winding for rotary electric machine - Google Patents

Abstract

PURPOSE:To facilitate the fitting work of multiplex winding coils on a supporting shell, by winding up the inner and outer faces of the supporting shell combined with conductors, directly with a plurality of multiplex winding coil units fitted on the supporting shell, in multiplex winding system. CONSTITUTION:Insulating sheets 15 are provided for the full periphery of the bottom sections and side walls of each groove 11A-L, and superconducting insulating conductors 17 are wound up respectively in the grooves 11A-L provided with the insulating sheets 15. The insulating conductors 17 are directly wound up in one groove unit, for example, in the groove 11B in multiplex system to organize multiplex winding coils 5. In the same way, the insulating conductors 17 are wound up in the grooves 11A, C-L, and the multiplex winding coils 5 are respectively formed. In this manner, the multiplex winding coils 5 are formed by winding up the inner and outer faces of a supporting shell 3, continuously and directly with the insulating conductors 17, in multiplex system, and so the work for fitting the multiplex winding coils formed by a coil former, on the supporting shell cannot be needed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a stator winding for a rotating electrical machine, and more particularly to a stator winding for a rotating electrical machine with an improved structure of multiple winding rings.

[Technical background of the invention and other issues]

Conventionally, a stator winding that constitutes a superconducting alternating current generator is constructed by assembling a plurality of sets of multiple winding rings on either the inner or outer surface of a support cylinder. To assemble a multi-wound ring, first wrap an insulated conductor multiple times around a winding die to form each multi-wound ring, and then attach the formed multiple sets of multi-wound rings to a support tube. This is done by assembling and fixing it into the D-piece 1~. When this set (=1), two sets of multiple winding rings are overlapped with each other accurately.

However, it is not easy to assemble multiple sets of multi-wound wire rings into the slots of the support tube while accurately overlapping them, and the assembling work becomes complicated. Therefore, there is a drawback that it takes time to assemble the multi-wound ring, and the work efficiency of the assembling work of the multi-wound ring is low.

In addition, since it is not easy to assemble a multi-wound coil,
In this assembling operation, there is a risk of damaging the insulated conductor constituting the multi-wound ring, the slot of the support tube into which the multi-wound ring is installed, and the like.

[Purpose of the invention]

The present invention has been made in view of the above facts, and provides a stator winding for a rotating electrical machine that can improve the assembly work of a multi-winding ring and improve the quality of the stator winding. The porpose is to do.

[Summary of the Invention] In order to achieve the above object, the stator winding of a rotating electric machine according to the present invention comprises a support tube and a plurality of sets of multi-wound wire rings assembled to the support tube. Each multi-wound ring is constructed by continuously and directly winding the conductor 4-J multiple times over the inner and outer surfaces of the support tube, making it easy to assemble the multi-wound ring. It is something to do.

[Embodiments of the invention]

A superconducting alternating current generator as a rotating electric machine is configured with an ultra-high voltage stator winding, an ultra-high voltage rotor winding, and the like. Among these, the ultra-high voltage stator winding 1 is constructed by assembling a plurality of multiple winding rings 5 in a support tube 3 and numbering them as shown in FIG.

The support tube 3 is formed into a cylindrical shape by using 44-size glass fiber reinforced plastic with no voids. A plurality of fills A or 2 as guide portions are carved on the inner surface 7Jt and the outer surface 9 of this cylindrical support tube 3.

Each of these grooves 11A to 1- extends from the outer surface 9 of the support tube 3 to the end surface 13, for example, like the groove 11A shown in FIG.
A, it is a continuous round groove roughly extending from the inner surface 7 and the end surface 13B to the outer surface 9, and is formed in a hexagonal shape across the inner surface 7 and outer surface 9 of the support cylinder 3. These plurality of marks 11A-1 are carved almost parallel to each other without intersecting each other.

As shown in FIG. 3, an insulating plate 15 is attached to the bottom and sides of the eight grooves 11A to 11L. This insulating plate 15 is composed of a press board, and is provided over the entire circumference of the bottom and side walls of the eight grooves 11A to 11L. In this way, the insulating plate 15
An insulated conductor 17 for superconductivity is wound around each of the sections 111A-L to which the superconducting conductor 17 is attached.

As shown in FIG.
The multi-wound wire ring 5 is formed by directly winding the wire in multiple ways in one groove, for example, the groove 11B. Therefore, this multi-wound wire ring 5 is formed into a hexagonal shape along the groove 11B. Similarly, the insulated conductor 17 is wound around the grooves 11A, CL to form a multi-wound coil 5, respectively. These multiple winding rings 5 are arranged substantially parallel to each other without being superimposed on each other. Furthermore, the winding start end and winding end of each multi-wound coil ring 5 are electrically connected in series.

The multi-wound wire ring 5 is formed by rotating a drum 19 on which the insulated conductor 17 is wound in multiple layers in the direction of the arrow Y in the figure, and unwinding the insulated conductor 17 as shown in the figure. ,
This is done by repeatedly rotating the drum 19 between the inside and outside of the support tube 3 in the axial direction of the support tube 3 in the direction of arrow X in the figure. At this time, the groove 11A~
[will serve as a guide. In this way, the insulated conductor 17 constituting the multi-wound coil 5 is a superconducting conductor wrapped with high-density crepe paper tape for insulation, and is formed to have a smaller diameter than a conventional insulated conductor.

Further, as shown in FIG. 3, an insulating plate 15 is interposed around the outer periphery of the multi-wound wire ring 5 formed in the grooves 11A-L. This insulating plate 15 is provided around the entire outer periphery of the multi-wound coil ring 5. Furthermore, the wedge 21 is configured to fit into the openings of the grooves 118 to 118 over the entire circumference of the openings. This e!
Similarly to the support tube 3, the support tube 21 is made of glass fiber reinforced plastic with no voids. Then, by fitting this bracket 21 into the grooves 11Δ~L, the multi-wound coil ring 5 is fixed in the grooves 118~1- through the insulating plate 15.
The assembly of the multi-wound wire ring 5 to the support tube 3 is completed.

A superconducting generator is constructed by incorporating the stator winding 1 manufactured in this manner into a generator casing. The stator winding 1 is immersed in liquid helium and cooled within this superconducting generator.

- In the embodiment described in J:, if the multi-wound coil 5 is the insulated conductor 1
7 is formed by continuously and directly winding the wire in multiple layers over the inner and outer surfaces of the support tube 3, so it is necessary to assemble the multi-wound wire ring formed in a winding die to the support tube as in the conventional method. It will no longer be. Therefore, there was a risk that the insulated conductor 17 would be generated during the assembly work of this multi-wound coil.
Damage to the support tube 3 can be avoided, and stator windings of excellent quality can be manufactured.

In addition, multiple sets of multiple winding rings are arranged parallel to each other,
Since they are not matched with each other, the arrangement of the multiple winding rings 5 is easy and accurate.

As a result of (a), the work of assembling the multi-wound ring 5 to the support tube 3 is easy, and the work performance of the multi-wound ring can be improved.

Furthermore, the multiple winding ring 5 has an insulated conductor 1 with a smaller diameter than the conventional one.
7 is wrapped in multiple layers than before.
The ultra-high voltage stator winding 1 in which the multiple winding rings 5 are assembled and numbered can output a higher voltage than the conventional one. Therefore, in a superconducting alternator to which this ultra-high voltage stator winding 1 is applied, ultra-high voltage current can be transmitted without connecting a lifting transformer.

FIG. 4 shows the second stator winding of the rotating electric machine according to the present invention.
FIG. 2 is a partially cutaway perspective view showing an ultra-high voltage stator winding to which an embodiment is applied.

This second embodiment differs from the first embodiment in that the support cylinder 25
This is the shape of the multi-wound coil 23 assembled into the . In other words, four continuous grooves 31 are formed on the inner surface 27 and outer surface 29 of the support tube 25. This full 31
is formed in a helical shape as shown in FIG. 4 over the inner surface 27 and outer surface 29 of the support m25. Support tube 2
5, a plurality of such grooves 31 are carved in the circumferential direction of the support cylinder 25 without intersecting with each other. These matching grooves 3
1, the superconducting insulating η body is directly wound and numbered multiple times in the same manner as in the first embodiment, and a plurality of sets of multiple winding coils 23 are formed.
is formed. In this way, since the insulated conductor is wound within 31 circles, each of the multiple sets of multiple winding rings 2
3 are arranged almost parallel without being overlapped with each other,
The inner surface 27 and outer surface 29 of the support tube 25 are formed into a helical shape.

Therefore, the second embodiment can also achieve the same effects as the first embodiment. Furthermore, in this second embodiment, since the matching groove 31 is formed in a smooth helical shape without a bent portion, the insulated conductor can be wound within the groove 31 without bending. Therefore, the work of winding the insulated conductor becomes easier, and the workability of assembling the multi-wound wire ring 23 can be further improved.

In addition, in the first and second embodiments described above, the support tubes 3, 25
Although the grooves 11A to 11A to 31 are formed as guide portions in the above description, protrusions may be provided instead of the grooves. In this case, the insulated conductor is wrapped using the protrusions formed on the inner and outer surfaces of the support tube as guides.
A plurality of sets of multi-wound rings are formed. Since such protrusions are easier to process than grooves, the manufacturing cost of the support tube can be reduced.

Furthermore, in the first and second embodiments, the grooves 11A-L,
A wedge 21 is fitted into the frontage part of 3'1, and the multiple winding ring 5,
23 has been described, but a bind may be used instead of this pattern 21.

This bind is wound in the circumferential direction of the support cylinder 25 and fixes each multi-wound ring 5, 23 to the support cylinder 3.25 via an insulating plate.

Roughly speaking, in the first and second embodiments, the grooves 11A to 31 carved in the support tube 3°25 are a continuous round of grooves, but a part of these grooves is omitted. Even if J: Yes. For example, in the first embodiment shown in FIG. 1, the grooves 11A to 15 carved in the outer surface 9 of the support tube 3 and the vortex portion extending from the bent portion 33 to the end surfaces 13Δ and B are omitted. This is the case. In this case, since there is no need to bend the vortex to form it, it is easier to carve the vortex.
[Manufacturing of support cylinders 3 and 25] S1- can be further reduced.

In addition, in each of the above embodiments, explanations have been given of ultra-high voltage stator windings using superconducting conductors as insulated conductors, but the application is also applicable to stator windings using normal conducting conductors as insulated conductors. be able to. When this stator winding is incorporated into a normally conducting alternating current generator, this stator winding is cooled by being immersed in insulating oil.

Furthermore, the present invention provides superconducting AC motors and normal conducting AC motors.
It can also be applied to stator windings and stator windings.

〔Effect of the invention〕

As described above, according to the stator winding of a rotating electric machine according to the present invention, the stator winding can be assembled into the support tube. : Multiple sets of multi-wound rings are constructed by directly winding the conductor in multiple layers on the inner and outer surfaces of this support tube, so that the multi-wound rings can be supported. The work of assembling the tube l\ is easy, and the work fη of a can be moved in one direction.
In addition, the effect of improving the crystal quality of the stator winding is shown.

[Brief Description of the Drawings] Fig. 1 shows a first embodiment of a stator winding for a rotating electric machine according to the present invention, and shows a state in which an insulated conductor is wound (=I IJ). , FIG. 2 is a perspective view of one layer of vortices carved in the support tube of the first embodiment with the others omitted, FIG. 3 is a cross-sectional view of the main part of FIG. 1, and FIG. It is a partially cutaway perspective view of an ultra-high voltage stator winding to which a second embodiment of the stator winding for a rotating electric machine according to the present invention is applied. 1... Ultra-high voltage stator winding Line, 3... Support tube, 5...
Multiple winding wire ring, 11Δ...I-... groove, 17... insulated conductor. Figure 36. Contents of amendment Procedure Neg1 Official document (spontaneous) May 7, 1985 Manabu Shiga, Commissioner of the Patent Office1, Indication of the case 1985 Patent Application No. 302252, Name of invention Stator winding of rotating electric machine 3. What is the relationship between the person making the amendment and the case? Patent applicant (307) Toshiba Corporation 4. Agent (1) "Passing" on page 5, line 5 and line 8 of the specification.
Correct to wearing j. (2) On page 11, line 11 of the specification, "The stator winding is normally conductive J is corrected to superconducting J where one stator winding is superconducting rotor winding." (3) Specification No. On page 11, lines 14 to 15, [Ultra-high-voltage stator winding and stator winding of a normal-conducting AC motor] is corrected to "Ultra-high-voltage stator winding 1."

Claims (1)

[Scope of Claims] 1. It has a support tube and a plurality of sets of multiple winding rings assembled to the support tube, and each multiple winding ring continuously multiplexes a conductor over the inner and outer surfaces of the support tube. A stator winding for a rotating electric machine, characterized in that the stator winding is constructed by directly winding the winding around the rotor. 2. The multiple sets of multi-wound coils assembled on the support tube are:
The stator windings of a rotating electric machine according to claim 1, which are assembled substantially parallel to each other without being overlapped with each other. 3. The stator winding of a rotating electrical machine according to claim 1 or 2, wherein the multiple winding ring is formed in a hexagonal shape over the inner and outer surfaces of the support cylinder. 4. A guide portion is formed on the inner and outer surfaces of the support tube, and the conductor is wound along the guide portion to form a multi-wound wire ring according to any one of claims 1 to 3. Stator winding of the mentioned rotating electric machine. 5. The stator winding for a rotating electric machine according to claim 4, wherein the guide portion is a groove.