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Quantitative Comparison of Distinct Dual-Stator Permanent Magnet Vernier Machines for Direct-Drive Applications

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

Abstract

This paper proposes dual-stator permanent magnet Vernier (DS-PMV) machines for direct-drive applications. Also, the quantitative comparison of DS-PMV machines is carried out in terms of no-load performance and output torque characteristic. First, the operation principle is elaborated. Then, the theoretical expressions of air-gap magnetic fields are derived through the magnetic circuit approach. Moreover, the basic machine performances with different pole-slot configurations are quantitatively compared. The corresponding demonstration results are given, which verify that the designs without auxiliary teeth tend to have lower amplitudes of back electromotive force (EMF) harmonics, higher rated average torque, and lower torque ripple.

Original languageEnglish
Article number8104806
Pages (from-to)1-6
Number of pages6
JournalIEEE Transactions on Magnetics
Volume55
Issue number7
Online published24 May 2019
DOIs
Publication statusPublished - Jul 2019

Funding

ACKNOWLEDGMENT This work was supported in part by a grant (Project No. CityU 21201216) from the Research Grants Council of Hong Kong, China and in part by a grant (Project No. 6000675) from the City University of Hong Kong, Hong Kong, China.

Research Keywords

  • Direct drive
  • dual-stator (DS)
  • high torque density
  • permanent magnet (PM)
  • Vernier machine

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