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Design and Optimization of an Asymmetric Rotor IPM Motor with High Demagnetization Prevention Capability and Robust Torque Performance

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  • Ling Ding

    (Department of Electrical Engineering, Harbin Institute of Technology, Harbin 150080, China
    Chongqing Research Institute of HIT, Chongqing 401151, China)

  • Yuan Cheng

    (Department of Electrical Engineering, Harbin Institute of Technology, Harbin 150080, China
    Chongqing Research Institute of HIT, Chongqing 401151, China)

  • Tianxu Zhao

    (Department of Electrical Engineering, Harbin Institute of Technology, Harbin 150080, China
    Chongqing Research Institute of HIT, Chongqing 401151, China)

  • Kai Yao

    (Department of Electrical Engineering, Harbin Institute of Technology, Harbin 150080, China)

  • Yao Wang

    (Department of Electrical Engineering, Harbin Institute of Technology, Harbin 150080, China)

  • Shumei Cui

    (Department of Electrical Engineering, Harbin Institute of Technology, Harbin 150080, China)

Abstract

In this paper, an asymmetric rotor interior permanent magnet (ARIPM) motor with high demagnetization prevention capability and robust torque performance is proposed. The key contribution of this paper lies in two aspects. On the one hand, a novel asymmetric rotor with a shifted magnet axis is proposed to improve the demagnetization prevention capability and torque density. In order to obtain a proper asymmetric rotor topology of the ARIPM motor, the multi-physical performances, especially the PM demagnetization characteristics of five types of PM arrangements, are analyzed. Furthermore, an asymmetric rotor with V- and VV-type PM arrangement is preliminarily designed, considering the multi-physical performance balance and the potentially high anti-demagnetization ability. On the other hand, it is found that the asymmetric rotor structure can not only improve the nominal value of motor performance but also can enhance the resistance to the influence of manufacturing uncertainties. Therefore, multi-objective optimization of the ARIPM motor with rotor notch design is carried out to obtain an optimal motor structure with both high nominal value and robustness of motor performances. By comparing the simulation results with those of a benchmark motor, the superiority and validity of the proposed ARIPM motor are confirmed. Experimental tests will be carried out in the future to further verify the effectiveness of the proposed motor.

Suggested Citation

  • Ling Ding & Yuan Cheng & Tianxu Zhao & Kai Yao & Yao Wang & Shumei Cui, 2023. "Design and Optimization of an Asymmetric Rotor IPM Motor with High Demagnetization Prevention Capability and Robust Torque Performance," Energies, MDPI, vol. 16(9), pages 1-15, April.
    • Handle: RePEc:gam:jeners:v:16:y:2023:i:9:p:3635-:d:1130923
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    References listed on IDEAS

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    1. Ya Li & Hui Yang & Heyun Lin & Shuhua Fang & Weijia Wang, 2019. "A Novel Magnet-Axis-Shifted Hybrid Permanent Magnet Machine for Electric Vehicle Applications," Energies, MDPI, vol. 12(4), pages 1-13, February.
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    Cited by:

    1. Wojciech Szelag & Cezary Jedryczka & Mariusz Baranski, 2024. "A New Method of Reducing the Inrush Current and Improving the Starting Performance of a Line-Start Permanent-Magnet Synchronous Motor," Energies, MDPI, vol. 17(5), pages 1-20, February.

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