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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摘要

针对交流牵引电机存在电磁噪声过大而影响其推广应用的问题,提出一种基于内切圆弧的交流牵引电机齿肩削角降噪方法。阐述交流牵引电机电磁噪声产生的根本原因及有关径向电磁力谐波空间阶次的计算方法,建立电机定子齿肩采用内切圆弧式削角处理前后定子齿槽与转子表面间气隙宽度随转子位置变化的函数关系式,分析定子齿肩削角处理对电机电磁噪声的影响,并对其效果进行仿真,同时与直线式齿肩削角法的效果进行对比分析。结果表明,交流牵引电机定子齿肩采用内切圆弧式削角处理后可显著降低其电磁噪声,并且具有比直线式削角法更好的降噪效果。最后对一台5.5kW交流牵引电机进行内切圆弧式定子齿肩削角,取得了8.4dB(A)的降噪效果,由此可见,该方法具有较好的应用价值。

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	刘东浩
	张小平
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	朱广辉

关键词 ：交流牵引电机, 齿肩削角降噪方法, 内切圆弧, 有限元法

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

收稿日期: 2020-03-16

PACS:

TM34

基金资助:

长株潭国家自主创新示范区专项资助项目（2017XK2303）

通讯作者: 张小平男，1966年生，博士，教授，硕士生导师，研究方向为电力电子与电力传动、智能控制等。E-mail: zxp836@163.com

作者简介: 刘东浩男,1996年生,硕士研究生,研究方向为电力电子与电力传动。E-mail: cblcsc0731@163.com

引用本文:

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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