TR2021-124

Analytical Modeling and Design Optimization of a Vernier Permanent Magnet Motor


    •  Wang, B., Zhou, L., Wang, H., Lin, C., "Analytical Modeling and Design Optimization of a Vernier Permanent Magnet Motor", IEEE Energy Conversion Congress and Exposition (ECCE), October 2021.
      BibTeX TR2021-124 PDF
      • @inproceedings{Wang2021oct3,
      • author = {Wang, Bingnan and Zhou, Lei and Wang, Hongyu and Lin, Chungwei},
      • title = {Analytical Modeling and Design Optimization of a Vernier Permanent Magnet Motor},
      • booktitle = {IEEE Energy Conversion Congress and Exposition (ECCE)},
      • year = 2021,
      • month = oct,
      • url = {https://www.merl.com/publications/TR2021-124}
      • }
  • MERL Contacts:
  • Research Areas:

    Applied Physics, Multi-Physical Modeling, Optimization

Abstract:

In this paper, we present the analysis and design optimization of a Vernier permanent magnet (VPM) motor for direct-drive applications. A subdomain-based analytical model is developed for fast calculation of the electromagnetic performances, including air-gap flux, torque ripple, and power factor. Built on the analytical model, we investigate the trade-off between torque generation and power factor of the VPM motor, and conduct multi-objective optimization for key design parameter of the VPM motor. Flux density in different regions of the stator core is calculated from the analytical model, on which a constraint is set in the objective functions to consider the saturation effect. The optimized VPM achieves 1.9x torque output compared with a commercially-available surface-mount permanent magnet direct-drive motor with the exact inner and outer dimensions at the same speed.