Design and comparison of Vernier permanent magnet machines

Siu Lau Ho; Shuangxia Niu; Weinong Fu

doi:10.1109/TMAG.2011.2157309

Design and comparison of Vernier permanent magnet machines

Siu Lau Ho, Shuangxia Niu, Weinong Fu

Research output: Journal article publication › Journal article › Academic research › peer-review

110 Citations (Scopus)

Abstract

Vernier permanent magnet (VPM) machines can be utilized for direct drive applications by virtue of their high torque density and high efficiency. The purpose of this paper is to develop a general design guideline for split-slot low-speed VPM machines, generalize the operation principle, and illustrate the relationship among the numbers of the stator slots, coil poles, permanent magnet (PM) pole pairs, thereby laying a solid foundation for the design of various kinds of VPM machines. Depending on the PM locations, three newly designed VPM machines are reported in this paper and they are referred to as 1) rotor-PM Vernier machine, 2) stator-tooth-PM Vernier machine, and 3) stator-yoke-PM Vernier machine. The back-electromotive force (back-EMF) waveforms, static torque, and air-gap field distribution are predicted using time-stepping finite element method (TS-FEM). The performances of the proposed VPM machines are compared and reported.

Original language	English
Article number	6027625
Pages (from-to)	3280-3283
Number of pages	4
Journal	IEEE Transactions on Magnetics
Volume	47
Issue number	10
DOIs	https://doi.org/10.1109/TMAG.2011.2157309
Publication status	Published - 1 Oct 2011

Keywords

Direct drive
electric motor
finite element method (FEM)
permanent magnet (PM)
time stepping
Vernier

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering

More information

10.1109/TMAG.2011.2157309

Cite this

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Design and comparison of Vernier permanent magnet machines

Abstract

Keywords

ASJC Scopus subject areas

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