基于解析法的表贴式永磁同步电动机电磁场与齿槽转矩的分析

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Abstract Permanent magnet motor has been widely developed because of its simple structure, reliable operation and so on.However, the slotting of the motor will change the structure and magnetic circuit of the motor, resulting in the distortion of the air gap magnetic field, and generating cogging torque, which will result in noise and vibration. The electromagnetic field distribution under the influence of slotting can be solved by the finite element method. However, the calculation cycle is long and the calculation results are sensitive to the subdivision. In comparison, the analytical method has a short computational time, and can give the mathematical relationship between the motor performance and the designed parameters. An analytical model based on the exact sub region method is proposed for the no-load magnetic field distribution of a surface-mounted permanent magnet synchronous motor (PMSM) considering slotting effects.

Key words： cogging torque magnetic field distribution analytic model surface-mounted permanent magnet synchronous motor

Received: 26 August 2018 Published: 17 April 2019

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	Jiao Shi
	Lan Zhiyong
	Wang Lin

Cite this article:

Jiao Shi,Lan Zhiyong,Wang Lin. Analysis of electromagnetic field and cogging torque of surface mounted permanent magnet synchronous motor based on analytic method[J]. Electrical Engineering, 2019, 20(4): 7-11.

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http://dqjs.cesmedia.cn/EN/Y2019/V20/I4/7

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