Method for Reducing Shoulder Noise of AC Traction Motor Based on Inscribed Arc
Liu Donghao1,2, Zhang Xiaoping1,2, Guo Yuxuan1,2, Jiang Haipeng1,2, Zhu Guanghui3
1. National-Local Joint Engineering Laboratory of Marine Mineral Resources Exploration Equipment and Safety Technology Hunan University of Science and Technology Xiangtan 411201 China;
2. College of Information and Electrical Engineering Hunan University of Science and Technology Xiangtan 411201 China;
3. Xiangtan Electric Manufacturing Group Corporation Ltd Xiangtan 411201 China
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.
刘东浩, 张小平, 郭宇轩, 姜海鹏, 朱广辉. 基于内切圆弧的交流牵引电机齿肩削角降噪方法[J]. 电工技术学报, 2021, 36(6): 1259-1268.
Liu Donghao, Zhang Xiaoping, Guo Yuxuan, Jiang Haipeng, Zhu Guanghui. Method for Reducing Shoulder Noise of AC Traction Motor Based on Inscribed Arc. Transactions of China Electrotechnical Society, 2021, 36(6): 1259-1268.
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2021, Vol. 36 
