Rotor structure and rotor assembly of surface-mounted permanent magnet synchronous motor

A technology of permanent magnet synchronous motor and rotor structure, which is applied in the direction of electric components, magnetic circuit rotating parts, magnetic circuit shape/style/structure, etc. It can solve the problems of large torque fluctuation, easy vibration and noise, and high cost. Achieve the effect of reducing harmonic distortion rate, reducing weight and cost, reducing cogging torque and torque ripple
CN110445275APending Publication Date: 2019-11-12浙江新能机电科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
浙江新能机电科技有限公司
Publication Date
2019-11-12

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Abstract

The invention belongs to the technical field of surface-mounted permanent magnet synchronous motors, in particular to a rotor structure and a rotor assembly of a surface-mounted permanent magnet synchronous motor. The rotor structure comprises a rotor punching sheet and a magnetic steel arranged on the rotor punching sheet; a plurality of magnetic steels are uniformly distributed on the circumferential surface of the rotor punching sheet, and a shaft hole is formed in the middle of the rotor punching sheet; the bottom of each magnetic steel is a cambered surface, and the circle center of eachcambered surface and the center of the shaft hole are eccentrically arranged. The rotor assembly comprises a plurality of rotor structures which are axially stacked and arranged. According to the rotor structure and the rotor assembly of the surface-mounted permanent magnet synchronous motor, the cogging torque of the motor can be effectively reduced, winding harmonic waves and tooth harmonic waves are reduced, the torque fluctuation of the motor is reduced to a great extent, the vibration noise of the motor is reduced, and the operation stability is improved.
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Description

technical field

[0001] The invention belongs to the technical field of a surface-mounted permanent magnet synchronous motor, in particular to a rotor structure and a rotor assembly of a surface-mounted permanent magnet synchronous motor. Background technique

[0002] New energy vehicles are more and more popular with the public due to their environmental protection advantages. The auxiliary drive systems used in the internal vehicle air compressors and steering systems have more requirements for drive motors: high reliability, high performance, high Adaptability, while pursuing low cost, low weight, high response speed, etc.

[0003] The surface-mounted permanent magnet synchronous motor (SPM) attaches the magnetic steel to the surface of the rotor core, and strengthens the magnetic steel by covering the surface of the magnetic steel with a stainless steel sleeve or winding carbon fiber (so that it will not be invalidated by centrifugal force), surface-mounted Permanent mag...

Claims

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