Comprehensive performance comparison of variable leakage flux flux-intensifying permanent magnet motors with different rotor structures

Wenjian Zhu; Xiping Liu; Gaosheng Guo; Jianwei Liang

doi:10.1117/12.2619305

29 November 2021 Comprehensive performance comparison of variable leakage flux flux-intensifying permanent magnet motors with different rotor structures

Wenjian Zhu, Xiping Liu, Gaosheng Guo, Jianwei Liang

Author Affiliations +

Proceedings Volume 12080, 4th International Symposium on Power Electronics and Control Engineering (ISPECE 2021); 1208026 (2021) https://doi.org/10.1117/12.2619305
Event: 4th International Symposium on Power Electronics and Control Engineering (ISPECE 2021), 2021, Nanchang, China

Abstract

In this paper, two new variable leakage flux permanent magnet motors with different structures are proposed. The leakage flux of the two motors can be adjusted automatically with the change of q-axis current, and the operation principle of the two motors is analyzed by using equivalent magnetic circuit analysis model. Furthermore, the two motors owe the characteristic of Ld<Lq through the special design of rotor structures to enhance the flux-weakening capacity. The finite element method is used to analyze the electromagnetic characteristics, temperature characteristics and mechanical characteristics of the two motors in detail. The results verify the characteristics of Ld<Lq and the controllable leakage flux of the two motors, and also verify that the motor with multi-stage permanent magnets has a wider speed regulation range, a larger output torque, lower temperature rise and better robustness than the motor with single-stage permanent magnets.

Citation Download Citation

Wenjian Zhu, Xiping Liu, Gaosheng Guo, and Jianwei Liang "Comprehensive performance comparison of variable leakage flux flux-intensifying permanent magnet motors with different rotor structures", Proc. SPIE 12080, 4th International Symposium on Power Electronics and Control Engineering (ISPECE 2021), 1208026 (29 November 2021); https://doi.org/10.1117/12.2619305

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