Permanent magnetic motor stator and permanent magnetic motor

A permanent magnet motor and stator technology, which is applied in the field of electric motors to achieve the effects of reducing electromagnetic vibration and rotor eddy current loss, reducing complexity, and reducing or eliminating harmonics

Active Publication Date: 2018-06-26
ZHENGZHOU YUTONG BUS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a permanent magnet motor stator and a permanent magnet motor, which are used to solve the problem of large-amplitude harmonics in the fractional slot winding permanent magnet motor in the prior art

Method used

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  • Permanent magnetic motor stator and permanent magnetic motor
  • Permanent magnetic motor stator and permanent magnetic motor
  • Permanent magnetic motor stator and permanent magnetic motor

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Embodiment Construction

[0022] The specific embodiment of the present invention will be further described below in conjunction with accompanying drawing:

[0023] Embodiment of a kind of permanent magnet motor of the present invention:

[0024] In the prior art, most of the permanent magnet motors with fractional slot concentrated windings are used. The permanent magnet motor with 8 poles and 9 slots is taken as an example below, as shown in figure 1 In the permanent magnet motor, there are 9 stator teeth on the stator, which are the wide stator teeth in the present invention:

[0025] Specifically as figure 1 As shown, the numbers 1 to 9 represent the labels of the stator slots, that is, stator slots 1 to 9, Indicates the direction of the current, The direction of the current is to flow into the paper surface, A, B, and C are three-phase windings, A+ is the positive direction of phase A (that is, the direction of current flows into the paper), and A- is the negative direction of phase A (th...

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Abstract

The invention provides a permanent magnetic motor stator and a permanent magnetic motor. The stator comprises stator teeth axially arranged at equal intervals, wherein the stator teeth comprise wide stator teeth and fine stator teeth, width of the wide stator teeth is greater than width of the fine stator teeth, and each wide stator tooth is arranged adjacent to the fine stator teeth. The permanent magnetic motor comprises a main winding and an auxiliary winding, wherein the main winding is connected with the auxiliary winding, when the main winding is connected with the auxiliary winding in series, the turn number of the main winding and the auxiliary winding is half of the winding turn number when no fine stator teeth are added; when the main winding is connected with the auxiliary winding in parallel, the turn number of the main winding and the auxiliary winding is equal to the winding turn number when no fine stator teeth are added, so coil winding complexity is reduced. The permanent magnetic motor employing the stator is advantaged in that harmonic waves in winding permanent magnet motors with fractional slot concentrated windings can be reduced or eliminated, and electromagnetic vibration and rotor eddy current loss of the permanent magnet motors can be reduced.

Description

technical field [0001] The invention belongs to the field of motors, in particular to a permanent magnet motor stator and a permanent magnet motor. Background technique [0002] Permanent magnet motors are more and more widely used in high-performance control systems. Compared with traditional fractional slot distributed winding permanent magnet motors, fractional slot concentrated winding permanent magnet motors are used in many industrial occasions, especially electric vehicle electric drive systems. More and more applications, because compared with the traditional permanent magnet motor, the fractional slot concentrated winding permanent magnet motor can significantly reduce the size of the end winding, save copper, reduce copper consumption, reduce the weight and volume of the motor, and reduce the winding resistance , improve the efficiency and power density of the motor, and save costs; there is no crossover between windings, and there will be no phase-to-phase insulat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K1/16H02K3/28
CPCH02K1/165H02K3/28Y02T10/64
Inventor 韩守亮崔淑梅郑维康娟
Owner ZHENGZHOU YUTONG BUS CO LTD
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