Abstract：The three-phase permanent magnet motor is driven by frequency conversion. The windings contain symmetrical current and asymmetric current of various frequencies, and even DC components. Under the modulation of the pole slot of the motor, the interaction between the current magnetic field and the permanent magnet magnetic field will cause the radial vibration of the motor. In this paper, the three-phase current of the prototype is analyzed, and the radial magnetomotive force of fundamental wave, DC component, symmetrical harmonic current and asymmetric harmonic current are deduced respectively. The radial vibration model caused by the current of each component is deduced according to Maxwell's magnetic force formula, and the correctness of the model is verified by the prototype. Finally, a radial vibration suppression model of multi-harmonic current injection method is derived, and a comprehensive radial vibration suppression control strategy of permanent magnet motor is designed based on the multi-objective RMSProp optimization algorithm. The correctness and effectiveness of the proposed method are verified by the prototype experiment.
康乐, 夏加宽, 苏航, 宋孟霖, 张荣津. 表贴式永磁电机各次电流引起径向振动的机理分析及综合抑制策略[J]. 电工技术学报, 2022, 37(18): 4638-4650.
Kang Le, Xia Jiakuan, Su Hang, Song Menglin, Zhang Rongjin. Mechanism Analysis and Comprehensive Suppression Strategy of Radial Vibration Induced by Each Current of Surface Magnet Motor. Transactions of China Electrotechnical Society, 2022, 37(18): 4638-4650.
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