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Rotary electric machine

A technology for rotating electrical machines and armatures, which is applied in the direction of electric components, electrical components, electromechanical devices, etc. It can solve the problems of not being able to use the magnetized yoke and achieve the effect of reducing the leakage flux

Inactive Publication Date: 2019-04-16
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] In the structure disclosed in Patent Document 1, when the number of laminated pieces of the rotor core is different, the magnetizing yoke portion that magnetizes the rotor needs to change the skew angle according to the number of laminated pieces. Therefore, there are the following techniques: Problem: The untwisted magnetized yoke that can be shared regardless of the number of laminated blocks cannot be used

Method used

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Examples

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Embodiment approach 1

[0022] In the first embodiment, an example of an AC rotating electrical machine with multi-layer multi-phase windings, more specifically, a permanent magnet motor with multi-layer multi-phase windings, is described, wherein the above-mentioned multi-layer multi-phase winding AC rotating electrical machine includes multiple Layered and multi-phased armature windings and each winding share a magnetic circuit in the gap between the excitation pole and the armature. Furthermore, as an example, the above-mentioned multi-layer multi-phase winding permanent magnet motor can be applied to an electric power steering device.

[0023] figure 1 It is a front sectional view of a motor of a V-shaped IPM (Interior Permanent Magnet Motor) according to Embodiment 1, figure 2 It is a perspective view of the rotor of the V-shaped IPM of Embodiment 1 seen from the axial direction.

[0024] A multilayer polyphase winding permanent magnet motor as a rotating electric machine includes an armature...

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Abstract

A rotary electric machine equipped with an armature and a rotor. The armature has: a stator core equipped with a plurality of magnetic teeth; and an armature winding comprising a plurality of multi-phase winding groups wound on the teeth and accommodated in slots between adjacent teeth. The rotor is arranged with respect to the armature so as to have a magnetic gap therebetween, and is provided soas to be capable of rotating around a rotary shaft. The rotor is equipped with a rotor core, and permanent magnets are embedded in the interior of the rotor core. The rotor core has a skewed-stage structure comprising two or more stages in the axial direction, and when viewed along the direction of the rotational axis, magnets in different stages and having different polarities are arranged so asnot to overlap one another in the circumferential direction.

Description

technical field [0001] The invention relates to a rotating electric machine. Background technique [0002] Patent Document 1 discloses a rotor in which permanent magnets are embedded in a rotor core, and the rotor core is twisted in stages at predetermined angles in the axial direction. In this structure, it is comprised so that the magnet of the other pole of the other stage may mutually overlap, seeing from an axial direction. [0003] In addition, Patent Document 2 discloses a stator core and discloses a rotor core in which the above-mentioned stator core is divided into a plurality of blocks in the axial direction and a stepwise skew is formed between the blocks. In the rotor core described above, a bridge portion is formed between the magnet through-hole and the outer peripheral surface of the rotor core. In addition, the angle of the bridge portion is equal to or greater than the skew angle. [0004] prior art literature [0005] patent documents [0006] Patent D...

Claims

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Application Information

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IPC IPC(8): H02K1/27H02K1/22
CPCH02K29/03H02K1/2766H02K2201/03H02K2201/06H02K1/276
Inventor 滝泽勇二
Owner MITSUBISHI ELECTRIC CORP
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