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Coil

A coil and phase coil technology, applied in the shape/style/structure of the winding conductor, etc., can solve the problems of increased time, complicated coil winding process, and increased equipment cost.

Active Publication Date: 2014-12-03
AISIN AW CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, in the structure of Patent Document 1, the coil winding process of winding the coil on the iron core is complicated, the time required for the coil winding process increases, and the cost of equipment for performing the coil winding process increases. possibility

Method used

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no. 1 approach

[0029] A first embodiment of the coil of the present invention will be described with reference to the drawings. Here, the coil of the present invention is applied to a coil for a rotating electrical machine, specifically, to a coil 10 wound around a stator core 2 of a stator 1 (see figure 1 ) case as an example. Such as figure 1 As shown, the stator 1 of this embodiment is a stator for an inner rotor type rotating electric machine. In this specification, a rotating electrical machine is used as any concept including a motor (electric motor), a generator (generator), and a motor generator that functions as both a motor and a generator as needed. In this embodiment, the stator core 2 corresponds to the "core" in the present invention.

[0030] In the following description, unless otherwise specified, "axial direction", "circumferential direction C", and "radial direction R" refer to the cylindrical iron core reference plane S (refer to figure 1 ) axis is defined as a dat...

no. 2 approach

[0069] refer to Figure 11 as well as Figure 12 A second embodiment of the coil of the present invention will be described. This embodiment differs from the first embodiment described above in that "N" is "4". Hereinafter, differences from the above-mentioned first embodiment will be mainly described, and points not particularly indicated are the same as those of the above-mentioned first embodiment.

[0070] Such as Figure 12 As shown, in this embodiment, the coil 10 has a first star connection body 11, a second star connection body 12, a third star connection body 13, and a fourth star connection body 14, a total of four star connections body. The four star connection bodies 11 to 14 are divided into three phase coil parts respectively corresponding to the three phases, and the first ends 71 ​​of the three phase coil parts are independently formed by each star connection body 11 to 14 The neutral points 91-94 are connected. In addition, in the present embodiment, eac...

no. 3 approach

[0077] refer to Figure 13 A third embodiment of the coil of the present invention will be described. exist Figure 13 in, with figure 1 Similarly, only the folded-back portion of the unit coil portion is shown, and the illustration of the overlapping portion and connecting members between the coil end portion 10 a and the neutral points 91 and 92 is omitted. In this embodiment, the shapes of the U-phase unit coil parts 31U to 38U, the V-phase unit coil parts 31V to 38V, and the W-phase unit coil parts 31W to 38W (turned-back parts) when viewed along the axial direction L, and the The overall arrangement shape of the coil end portion 10a when viewed in the L direction is different from the shape of the first embodiment described above. In the above first embodiment, if figure 1 As shown, the shape of each unit coil portion (folded portion) viewed along the axial direction L is an arc shape along the circumferential direction C. Furthermore, in the first embodiment descr...

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Abstract

Provided is a coil that can suppress an increase in the time taken for a coil winding process and an increase in facility costs while suppressing the generation of a circulating current. Each of a plurality of star connection bodies includes three phase coil portions corresponding to each of three phases, and a first end portion of each of the three phase coil portions is connected using a neutral point which is independently formed by a star connection body. Second end portions of the phase coil portions of the same phase provided in the different star connection bodies are connected to each other. A phase coil arrangement area (A) where each of the phase coil portions is disposed is set to be continuous in a circumferential direction (C), and is arranged in such a manner as not to overlap the phase coil arrangement area (A) where the other phase coil portions of the same phase are arranged in a radial direction (R) view. A center position (P) in the circumferential direction of each of the phase coil portions is set at a position different by 120° in the circumferential direction (C) with respect to a center position (P) in the circumferential direction of the phase coil portion of another phase provided in the same star connection body.

Description

technical field [0001] The present invention relates to a coil that is wound around an iron core having a plurality of slots dispersedly arranged in the circumferential direction of a cylindrical iron core reference plane, and has a plurality of star terminals. Background technique [0002] As the conventional technique of the above-mentioned coil, there exists the technique described in Unexamined-Japanese-Patent No. 2006-311733 (patent document 1), for example. Patent Document 1 discloses a configuration in which the coil includes two star-connected bodies (Y-shaped connected bodies), and a neutral point connecting one end of each phase coil portion of each phase is opposite to the two star-shaped connected bodies. set to shared. In the structure described in Patent Document 1, the two phase coil parts of the same phase that constitute the parallel circuit (Patent Document 1 Figure 5 Shown series coil A and series coil B) are respectively as described in this document ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K3/28
CPCH02K3/28H02K3/12
Inventor 中川善也
Owner AISIN AW CO LTD
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