基于内切圆弧的交流牵引电机齿肩削角降噪方法

doi:10.19595/j.cnki.1000-6753.tces.200269

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Abstract

The electromagnetic noise of AC traction motor is too large, which affects its popularization and application. Therefore, this paper proposes a noise reduction method for the shoulder angle of AC traction motor based on inscribed arc. The fundamental reasons for the electromagnetic noise of AC traction motors and the calculation method of the spatial order of the radial electromagnetic force harmonics are described. The stator teeth of the motor stator are internally arc-cut, and the air gap between the stator teeth and the rotor surface is established. The functional relationship between the gap width and the rotor position is analyzed. The influence of the stator shoulder angle treatment on the electromagnetic noise of the motor is analyzed. The effect is simulated and verified. At the same time, the effect of the linear shoulder angle method is analyzed and compared. The results show that the stator tooth shoulder of the AC traction motor can significantly reduce its electromagnetic noise after inward arc cutting, and it has a better noise reduction effect than the linear angle cutting method. Finally, a 5.5kW AC traction motor was chamfered with an inscribed circular arc stator shoulder, and a noise reduction effect of 8.4dB(A) was obtained. It is shown that this method has good application value.

Key words： AC traction motor tooth shoulder shaving method inscribed arc finite element method

Received: 16 March 2020

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TM34

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	Articles by authors
	Liu Donghao
	Zhang Xiaoping
	Guo Yuxuan
	Jiang Haipeng
	Zhu Guanghui

Cite this article:

Liu Donghao,Zhang Xiaoping,Guo Yuxuan等. Method for Reducing Shoulder Noise of AC Traction Motor Based on Inscribed Arc[J]. Transactions of China Electrotechnical Society, 2021, 36(6): 1259-1268.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.200269 OR https://dgjsxb.ces-transaction.com/EN/Y2021/V36/I6/1259

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