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Rotating electric machine

A rotary motor and slot technology, applied in the shape/style/structure of the winding conductor, can solve the problems of deviation and difficulty in driving the rotary motor, and achieve the effect of suppressing the jump height, smooth and stable driving, and realizing miniaturization.

Inactive Publication Date: 2014-12-24
HONDA MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, in the rotating electric machine employing the above-mentioned two-layer winding, when it is desired to shorten the length of the bridging portion, it is necessary to shorten the pitch of the coils arranged in the two slots, but when shortening the pitch In this case, the pitch of the coil deviates from the pitch of the magnetic poles of the rotor disposed inside the stator, making it difficult to drive the rotating electric machine smoothly.

Method used

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  • Rotating electric machine
  • Rotating electric machine
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Embodiment Construction

[0019] The rotating electrical machine 10 is, for example, a 3-phase AC brushless motor, such as figure 1 As shown, there is an annular stator 12 . Inside the stator 12, a rotatable rotor (not shown) passes through, and the rotating electric machine 10 passes through a power source (not shown) respectively via figure 2 The rotor is rotationally driven by electric power supplied from the illustrated U-phase terminal 14 , V-phase terminal 16 , and W-phase terminal 18 .

[0020] The stator 12 includes: an annular stator core (iron core) 20; a tooth portion 22 protruding from the stator core 20 to the inner diameter side; A plurality of electrical conductors (coils) 26 in 24.

[0021] A plurality of slots 24 are formed on the stator core 20 at equal intervals from each other, and are formed to penetrate to the one end surface 20a and the other end surface 20b of the stator core 20 along the axial direction (arrow A direction). . In addition, the one end surface 20a and the ot...

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Abstract

Conductors (26) comprising a U-phase coil (34), a V-phase coil (36) and a W-phase coil (38) are arranged in multiple slots (24) in a stator (12) forming a rotating electric machine (10). These U-phase coils (34), V-phase coils (36) and W-phase coils (38) are equipped with wave-wound parts (46, 54), which have bridging parts (44, 52) on one end-face (20a) side of the stator core (20), and lap-wound parts (48, 56), which are adjacent to the wave-wound parts (46, 54) and are formed so as to encircle the one end face (20a) and the other end face (20b) of the stator core (20). The wave-wound parts (46, 54) and the lap-wound parts (48, 56) are arranged so as to alternate in the winding direction of the conductors (26).

Description

technical field [0001] The present invention relates to a rotating electric machine which has coils housed in slots of a stator to generate a rotating magnetic field, and which operates as a motor or a generator. Background technique [0002] Conventionally, there is known a rotating electric machine which has an annular stator, a rotor rotatably inserted into the center of the stator, and rotation by a plurality of coils wound in slots of the stator. The magnetic field causes the rotor to spin. [0003] As a method of winding such a coil around a plurality of slots, generally known is wave winding in which one end of the stator and the other end of the stator are alternately bridged. In addition, in the above-mentioned wave winding, two-layer winding in which coils of different phases are arranged in the same slot is known. In this double-layer winding, for example, as disclosed in JP-A-2005-110431, when a plurality of coils are placed in the same slot, coils of different...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K3/04H02K3/28
CPCH02K3/12H02K3/28
Inventor 松冈庆久柴田匠梓泽庆介
Owner HONDA MOTOR CO LTD