Design and Optimization of a Dual-Permanent-Magnet Vernier Machine with a Novel Optimization Model

Qifang Lin, Shuangxia Niu, W. N. Fu

Research output: Journal article publicationJournal articleAcademic researchpeer-review

10 Citations (Scopus)


In this article, the optimal configuration of the stator for the dual-permanent-magnet vernier machine (DPMVM) is investigated. A novel numerical model used to perform the optimization and compare the performances between different permanent magnet (PM) arrangements on the stator part is first presented in this article. According to the proposed numerical model, the effects of the location of PMs at different positions of the stator are studied in terms of output torque, torque ripple, efficiency, and power factor (PF). It is found that the PMs at stator slots contribute more to the output torque than PMs on stator teeth. Moreover, it is found that the stator PMs will add extra cogging torque to the machine compared with the rotor-PM machine. The PF of the dual-PM machine with the combination of the selected stator slots and rotor poles can be higher than 0.9, which is relatively higher compared with both the rotor-PM machine and stator-PM machine.

Original languageEnglish
Article number8957376
JournalIEEE Transactions on Magnetics
Issue number3
Publication statusPublished - Mar 2020


  • Cogging torque
  • dual-PM (DPM)
  • optimization
  • power factor (PF)

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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