The Effect of Harmonics on Electromagnetic Vibration and Noise Characteristic in Inverter-Duty Motor
Xiao Yang1,2, Song Jinyuan3, Qu Renhao3, Jiang Weikang3
1. Wuhan Marine Electric Propulsion Research Institute Wuhan 430064 China; 2. Key Laboratory of Integrated Electric Power Technology for Ships Wuhan 436000 China; 3. School of Mechanical Engineering Shanghai Jiao Tong University Shanghai 200240 China
Abstract：The vibration and noise characteristics of the inverter-duty motor are important factors affecting the application of electric products. In order to grasp the vibration and noise excitation of inverter-duty motor accurately and design low-noise inverter-duty motor, an analysis model of the vibration-noise characteristics of inverter-duty motor is established in this paper. The output of a SPWM converter is derived according to the modulation theory. Then the electromagnetic force in a motor is calculated based on Maxwell's Law and a coupled multi-physics FEM simulation model is built. Finally, by comparing the measured sound power of the motor, the results show that the harmonics of motor vibration noise in the low-frequency part are generated by the modulation frequency of the motor, and the high-frequency harmonics introduced by the inverter cause the motor to radiate a lot of noise near the switching frequency. Therefore, the design of low-noise inverter-duty motors needs to consider eliminating or weakening these harmonics.
肖阳, 宋金元, 屈仁浩, 蒋伟康. 变频谐波对电机振动噪声特性的影响规律[J]. 电工技术学报, 2021, 36(12): 2607-2615.
Xiao Yang, Song Jinyuan, Qu Renhao, Jiang Weikang. The Effect of Harmonics on Electromagnetic Vibration and Noise Characteristic in Inverter-Duty Motor. Transactions of China Electrotechnical Society, 2021, 36(12): 2607-2615.
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2021, Vol. 36 
