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Rotation motor

A technology for rotating electrical machines and armature cores, applied in the field of rotating electrical machines, can solve problems such as uneven impedance, uneven current, and increased manufacturing processes

Inactive Publication Date: 2012-07-25
DENSO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In addition, as a method of winding and mounting the armature wire, there is a method of mounting and fixing a preformed conductor segment to the armature core (refer to Patent Document 1), but this method has the following problems: Before installing and fixing on the armature core, the conductor sector has to be formed first, so the manufacturing process increases
[0007] However, in the case of dividing into multiple conductors, there is a concern that impedance variation may occur between different conductors
Therefore, there is a concern that impedance unevenness will occur in the armature winding, resulting in uneven current.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] [Structure of Embodiment 1]

[0055] use Figure 1 to Figure 7 , the structure of the rotating electrical machine of Embodiment 1 will be described.

[0056]The rotating electrical machine of Embodiment 1 is a three-phase AC motor, and the rotating electrical machine includes a stator (armature) having a stator core 2 (armature core) and a coil wound around the stator core 2 in a distributed winding manner. Stator coil 3 (armature winding). Then, a rotating magnetic field is formed by passing a three-phase alternating current through the stator coil 3, and a rotor (not shown) arranged in the rotating magnetic field is rotated. Among them, various forms such as a permanent magnet type, an electromagnet type, and an iron core type can be employed for the rotor.

[0057] The stator core 2 is formed into a cylindrical shape by stacking a plurality of steel plates. In addition, the stator core 2 has: a plurality of teeth 5 whose ends are opposed to the rotor and arranged...

Embodiment 2

[0115] [Structure of Embodiment 2]

[0116] use Figure 8 , focusing on the points different from those of the first embodiment, the structure of the rotating electrical machine of the second embodiment will be described.

[0117] In the rotating electric machine of embodiment 2, the first conductor U 1 , the second conductor U 2 , the first conductor V 1 , the second conductor V 2 , the first conductor W 1 , and the second conductor W 2 The processing method in the curve portion 20 is different from that of the first embodiment.

[0118] In this embodiment, if the turning portion 20Ua is taken as an example, the first conductor U arranged in the first layer of the Nth slot 7 1 , passing through and across the upper part of the first layer of the N+1th groove 7, the upper part of the boundary part between the first layer and the second layer of the N+2th groove 7, and entering the first layer of the N+3th groove 7 second floor.

[0119] In addition, the second conduct...

Embodiment 3

[0129] [Structure of Embodiment 3]

[0130] use Figure 9 , focusing on the points different from those of Embodiment 1, the structure of the rotating electrical machine of Embodiment 3 will be described.

[0131] In embodiment 3, the first conductor U 1 , the second conductor U 2 , the first conductor V 1 , the second conductor V 2 , the first conductor W 1 , and the second conductor W 2 From the start of winding to the end of winding, it is wound in a wave form in one direction in the circumferential direction of the stator core 2 .

[0132] As a result, teeth on which the stator coil 3 is not wound (empty teeth 5A) are formed on the axial end surface of the stator core 2 in accordance with the number of poles of the rotor.

[0133] Specifically, in the present embodiment, the rotor of the rotating electrical machine has 14 magnetic poles. Therefore, if Figure 9 As shown, seven teeth of the stator core 2 on which the stator coil 3 is not wound are formed on each ax...

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Abstract

The invention provides a method for directly and continuously winding a continuous conductor on an armature core, wherein the armature winding of the rotation motor is uniform in impedance distribution so as to form the conductors (17U,17V,17W) for coils (11)-(13) of each phase. The conductors (17U,17V,17W) are divided into a first conductor (u1 (v1,w1)) and a second conductor (u2(v2,w2)) respectively. The first conductor and the second conductor are crossed with each other at a turning part (20). A slot containing part (21) for clamping the turning part is continuous. The first-layer conductors are the reversal of the second-layer conductors. Therefore, the lengths of the first and second conductors and the influence on the recipient for the leakage magnetic flux of the first and second conductors are homogenized accordingly. Therefore, the homogenization of the winding resistance, the reactance and the impedance can be realized.

Description

technical field [0001] The present invention relates to a rotating electrical machine mounted on an automobile, a truck, or the like. In addition, it can also be applied to industrial equipment, home electric appliances, and the like. Background technique [0002] Conventionally, as a rotating electric machine, there is a rotating electric machine provided with an armature composed of an armature core and multi-phase armature windings wound and attached to the armature core in a distributed winding manner. [0003] In addition, as a method of winding and mounting the armature wire, there is a method of mounting and fixing a preformed conductor segment to the armature core (refer to Patent Document 1), but this method has the following problems: Before being mounted and fixed on the armature core, the conductor sector has to be formed first, so the manufacturing process increases. [0004] Patent Document 1: Japanese Patent No. 4105111 [0005] Therefore, from the viewpoin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K3/12
Inventor 长田正彦向井拓三板仓亚希秋本明人
Owner DENSO CORP
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