永磁有刷直流电动机齿槽转矩与电磁噪声研究

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Abstract Aiming at problem of the cogging torque and electromagnetic noise of permanent magnet direct current motor (PMDCM) for electric lifting table, the motors with different eccentric structures of poles are studied. Firstly, the cogging torque and electromagnetic exciting force of PMDCM are analyzed theoretically. Secondly, the electromagnetic simulation analysis of PMDCM with different eccentric distance is carried out. Then, noise vibration harshness (NVH) simulation analysis of PMDCM with different eccentric distance for poles is carried out. Finally, a 70W and 4100r/min prototype is developed to verify the simulation results. The results show that increasing the eccentricity of the poles can reduce the cogging torque and electromagnetic exciting force, but it will reduce the torque of the motor. Therefore, the eccentricity distance of the poles should be reasonably selected in the design stage of PMDCM. This paper provides a reference for the design of low power PMDCM with noise requirements.

Key words： permanent magnet direct current motor (PMDCM) cogging torque electromagnetic noise simulation and test

Received: 06 December 2021

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	FENG Zhiyu
	WANG Bo
	YUAN Ye

Cite this article:

FENG Zhiyu,WANG Bo,YUAN Ye. Study on cogging torque and electromagnetic noise of permanent magnet direct current motor[J]. Electrical Engineering, 2022, 23(5): 62-67.

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http://dqjs.cesmedia.cn/EN/Y2022/V23/I5/62

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