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- Title
轮辐式游标永磁电机分析与多目标优化设计.
- Authors
刘洋; 宋宝; 周向东; 唐小琦
- Abstract
To minimize the influence of the magnetic potential fluctuation effect on the torque performances of spoke type vernier permanent-magnet machine (STVPM), the mechanism of the magnetic potential fluctuation effect was analyzed. An analytical model of the no-load air gap magnetic density was derived based on the equivalent magnetic circuit model, and the magnetic potential fluctuation effect on the air gap magnetic field modulation was studied. The accuracy of the rotor magneto motive force and air gap magnetic density analytical model was verified by using the finite element method. Then, a multi-objective optimization design method based on parameter sensitivity dimensionality reduction was proposed. The design variable space was stratified and reduced based on comprehensive sensitivity analysis method, and a high-accuracy performance proxy model was constructed depending on the sensitivity level. Based on the proxy model, the multi-objective genetic algorithm was applied to optimize the torque density, cogging torque, and torque ripple. Finally, the optimal design of the STVPM was determined, and effectiveness of the optimized design was verified by using the finite element method. The results show that the optimized cogging torque is reduced from 28. 5 mN·m to 10. 3 mN·m, the torque ripple is reduced from 4. 9% to 1. 6%, and the average torque is increased from 0. 68 N·m to 0. 83 N·m, which demonstrate that the torque performance and torque quality of STVPM are effectively improved.
- Subjects
MAGNETIC circuits; VERNIERS; TORQUE; MACHINERY
- Publication
Electric Machines & Control / Dianji Yu Kongzhi Xuebao, 2023, Vol 27, Issue 9, p1
- ISSN
1007-449X
- Publication type
Article
- DOI
10.15938/j.emc.2023.09.001