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A General Pattern-Based Design Optimization for Asymmetric Spoke-Type Interior PM Machines

Author

Listed:
  • Jiahui Huang

    (Department of Electrical Engineering, The Hong Kong Polytechnic University, Hong Kong 999077, China)

  • Weinong Fu

    (Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China)

  • Shuangxia Niu

    (Department of Electrical Engineering, The Hong Kong Polytechnic University, Hong Kong 999077, China)

  • Xing Zhao

    (Department of Electronic Engineering, University of York, York YO10 5DD, UK)

  • Yanding Bi

    (Department of Electrical Engineering, The Hong Kong Polytechnic University, Hong Kong 999077, China)

  • Zhenyang Qiao

    (Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China)

Abstract

A novel asymmetric spoke-type interior permanent magnet (AS-IPM) machine is proposed in this paper. It utilizes the magnetic-field-shifting (MFS) effect to improve the torque performance, which achieves a high utilization ratio of both permanent magnet (PM) torque and reluctance torque. In addition, a general pattern of rotor topologies is proposed to represent all possible machine structures. Various rotor structures can be obtained by changing the design parameters of the general pattern. A non-dominated sorting genetic algorithm II (NSGA-II) is adopted to automatically search for optimal rotor configurations. With the aid of the optimization program, an asymmetric spoke-type rotor structure with improved performance is obtained. To showcase the advantages of the proposed machine, the electromagnetic performance is compared between a conventional spoke-type interior permanent magnet (S-IPM) machine and a proposed AS-IPM machine. The finite-element simulation results show that the optimal design of the AS-IPM performs a 7.7% higher output torque ripple due to the MFS effect while the total PM volume remains the same. Meanwhile, the torque ripple of the proposed structure is significantly reduced by 82.1%.

Suggested Citation

  • Jiahui Huang & Weinong Fu & Shuangxia Niu & Xing Zhao & Yanding Bi & Zhenyang Qiao, 2022. "A General Pattern-Based Design Optimization for Asymmetric Spoke-Type Interior PM Machines," Energies, MDPI, vol. 15(24), pages 1-14, December.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:24:p:9385-:d:1000467
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    References listed on IDEAS

    as
    1. Pedro P. C. Bhagubai & João G. Sarrico & João F. P. Fernandes & P. J. Costa Branco, 2020. "Design, Multi-Objective Optimization, and Prototyping of a 20 kW 8000 rpm Permanent Magnet Synchronous Motor for a Competition Electric Vehicle," Energies, MDPI, vol. 13(10), pages 1-24, May.
    2. 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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