车用永磁同步电机的电磁噪声特性

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Abstract Magnetic field distortion caused by the larger current in low speed high torque or the weak magnetic field in high speed lead to increasing of electromagnetic force amplitude, so electric vehicle traction motor with the low speed high torque and high speed constant power operation ability is apt to cause large electromagnetic noise and vibration, which affects the comfort of the car. Based on Ansys multi-physics platform, the electromagnetic noise analysis of a 20kW permanent magnet synchronous traction motor is researched. The electromagnetic field finite element model and the stator structural 3D model were established to obtain the electromagnetic excitation force acting on the stator teeth and the low order radial mode frequency, the main source of large electromagnetic noise can be analyzed from two aspects of electromagnetic force and motor structure. The vibration response spectrum of the stator structure was obtained through the finite element simulation of the vibration response of the stator structure. Finally, the electromagnetic noise characteristics of the permanent magnet synchronous motor were analyzed by using the finite element simulation of the sound field.

Key words： Permanent magnet synchronous motor, electric vehicle, electromagnetic noise, multi-physics field

Published: 04 January 2017

PACS:

TM351

Fund:国家自然科学基金资助项目(51007050、51507097)

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	Zheng Jiang
	Dai Ying
	Shi Jian

Cite this article:

Zheng Jiang,Dai Ying,Shi Jian. Electromagnetic Noise Characteristics of Permanent Magnet Synchronous Motor Applied in Electric Vehicle[J]. Transactions of China Electrotechnical Society, 2016, 31(增刊): 53-59.

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https://dgjsxb.ces-transaction.com/EN/ OR https://dgjsxb.ces-transaction.com/EN/Y2016/V31/I增刊/53

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