Rotor optimization design of bearingless permanent magnet synchronous motor based on modular poles

被引：0
|
作者：
Zhu H.-Q. [1 ]
Cheng Y.-F. [1 ]
机构：
[1] School of Electrical and Information Engineering, Jiangsu University, Zhenjiang
来源：
Dianji yu Kongzhi Xuebao/Electric Machines and Control | 2020年 / 24卷 / 03期
关键词：
Bearingless permanent magnet synchronous motor; Modular poles; Suspension force ripples; Taguchi method; Torque ripples;
D O I：
10.15938/j.emc.2020.03.015
中图分类号：
学科分类号：
摘要：
The bearingless permanent magnet synchronous motor(BPMSM)is driven by sinusoidal wave, so the performance of motor is affected by sinusoidal shape of the air-gap magnetic flux distribution. To reduce the torque ripples and suspension force ripples, a special structure called modular permanent magnet poles is proposed. Firstly, the effect of the structure to improve sinusoidal shape of the air-gap magnetic flux distribution was described. Then, a mathematical model is deduced. Secondly, taguchi method was employed to optimize magnetic pole parameters where the ratio of torque ripples to average torque and the ratio of suspension force ripples to average suspension force were chosen as an objective function. Finally, conventional BPMSM with common pole and the BPMSM with modular pole were compared. The results show that the optimized no-load air-gap flux density waveform is significantly improved and lower torque ripples and suspension force ripples are produced based on almost the same average torque and suspension force. © 2020, Harbin University of Science and Technology Publication. All right reserved.
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页码：123 / 130
页数：7
相关论文
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