Multi-objective optimization of PMSM rotor structure based on stratified optimization strategy

YANG Shangming; MA Qihua

doi:10.12299/jsues.22-0009

Volume 36 Issue 4

Dec. 2022

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Article Navigation > Journal of Shanghai University of Engineering Science > 2022 > 36(4): 369-377

YANG Shangming, MA Qihua. Multi-objective optimization of PMSM rotor structure based on stratified optimization strategy[J]. Journal of Shanghai University of Engineering Science, 2022, 36(4): 369-377. doi: 10.12299/jsues.22-0009

Citation:

YANG Shangming, MA Qihua. Multi-objective optimization of PMSM rotor structure based on stratified optimization strategy[J]. Journal of Shanghai University of Engineering Science, 2022, 36(4): 369-377. doi: 10.12299/jsues.22-0009

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Multi-objective optimization of PMSM rotor structure based on stratified optimization strategy

doi: 10.12299/jsues.22-0009

YANG Shangming,
MA Qihua^,

School of Mechanical and Automotive Engineering, Shanghai University of Engineering Science, Shanghai 201620, China

Received Date: 2022-01-12
Publish Date: 2022-12-30

Abstract

Abstract

The permanent magnet synchronous motor (PMSM) has a high requirement on the smoothness of torque output. Due to influences of groove torque, reluctance torque pulsation, electromagnetic torque pulsation and other factors, the output torque pulsation of the interior PMSM is relatively large, which increases electromagnetic noise and output instability. A finite element model was established based on a 20 kW PMSM, and the accuracy of the model was verified. Taking the maximum output torque, the minimum torque pulsation and the minimum slot torque as optimization objectives, the sensitivity analysis of rotor structure parameters was carried out, and the stratified optimization was carried out by combining NSGA−Ⅱ algorithm and single variable parameter method. Compared with single-layer optimization, stratified optimization has a better effect on the target which is susceptible to variables. The acoustic simulation shows that the optimized rotor structure can improve electromagnetic noise significantly.

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References(26)

References

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