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Motor capable of inhibiting electromagnetic noise of motor and improving NVH, and automobile

An electromagnetic and noise technology, applied in the field of motor research, to achieve the effect of radial electromagnetic force suppression and electromagnetic noise suppression

Active Publication Date: 2019-06-21
GUANGZHOU XIAOPENG MOTORS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The appearance of the 48th-order frequency causes the motor to generate its own inherent 48th-order, 96th-order, and 24th-order noise

Method used

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  • Motor capable of inhibiting electromagnetic noise of motor and improving NVH, and automobile
  • Motor capable of inhibiting electromagnetic noise of motor and improving NVH, and automobile
  • Motor capable of inhibiting electromagnetic noise of motor and improving NVH, and automobile

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Experimental program
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Effect test

Embodiment Construction

[0022] The present invention will be further described below in conjunction with the embodiments and the accompanying drawings.

[0023] refer to figure 1 with figure 2 , a motor for suppressing the electromagnetic noise of the motor and improving NVH, comprising a rotor punch 1, an even number of magnet steel groups 22 are arranged on the rotor punch 1, each of the magnet steel groups 22 is arranged at intervals between N poles and S poles, A first notch 14 and a second notch 15 are provided on the outer edge of the corresponding rotor punch 1 of each magnet group 22, and the first notch 14 and the second notch 15 are distributed on both sides of the center line 13 of the magnet group , the angle between the centerline 11 of the first notch and the centerline 13 of the corresponding magnet group is α, the angle between the centerline 12 of the second notch and the centerline 13 of the corresponding magnet group is β, α<β. An asymmetric notch is opened on the rotor punch 1 ...

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Abstract

The invention discloses a motor capable of inhibiting electromagnetic noise of a motor and improving NVH, and an automobile, and relates to the field of motor research. The motor comprises a rotor punching sheet, wherein an even number of magnetic steel groups are arranged on the rotor punching sheet; the magnetic steel groups are arranged at intervals of N poles and S poles; a first notch and a second notch are formed in the outer edge, corresponding to each magnetic steel group, of the rotor punching sheet and distributed in the two sides of the center line of each magnetic steel group, theincluded angle between the center line of each first notch and the center line of the corresponding magnetic steel group is alpha, the included angle between the center line of each second notch and the center line of the corresponding magnetic steel group is beta, and [alpha] is smaller than [beta]. The asymmetric notches are formed in the rotor punching sheet, and an irregular air gap is formedbetween the rotor and a stator, so that the radial electromagnetic force borne by the stator is reduced, the fluctuation of the radial electromagnetic force is inhibited, and the purpose of inhibitingthe electromagnetic noise of the motor is achieved.

Description

technical field [0001] The invention relates to the field of motor research, in particular to a motor for suppressing the electromagnetic noise of the motor and improving NVH, and also relates to an automobile using the motor. Background technique [0002] For the permanent magnet synchronous motor for driving, the motor rotor is embedded with magnetic steel to generate the rotor magnetic field. The rotor magnetic field of the motor will generate radial electromagnetic tension on the stator punch (silicon steel sheet material). The electromagnetic tension is affected by the slotting of the stator punch to generate electric tension fluctuations, and finally electromagnetic noise is generated and radiated to the outside of the motor through the stator punch. . The traditional method of improving the electromagnetic noise of the motor is: stator chute or rotor slant pole. This method increases the difficulty of the process, is time-consuming and laborious, and has limited effe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K11/02H02K1/27H02K1/14H02K1/16
Inventor 孔庆波张水杏齐洪刚
Owner GUANGZHOU XIAOPENG MOTORS TECH CO LTD
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