Design and analysis of a magnetless double-rotor flux switching motor for low cost application

Chuang Yu, Shuangxia Niu, Siu Lau Ho, Weinong Fu

Research output: Journal article publicationJournal articleAcademic researchpeer-review

24 Citations (Scopus)


This paper presents a novel magnetless double-rotor flux switching motor for low cost cooling fan application. By creatively incorporating concentrated toroidal windings into a double-rotor middle-stator structure, the proposed motor not only realizes the flux switching feature, but also shortens the end-windings to improve its operational efficiency. To achieve a better performance, the motor dimensions, especially the stator and rotor pole arcs, are optimized. Meanwhile, with the introduction of a stepped air-gap, the torque at any rotor position is boosted and problems with zero output torque at starting is successfully avoided. The final optimized motor is analyzed using finite element method, and its validity is confirmed by the simulation results.
Original languageEnglish
Article number6971300
JournalIEEE Transactions on Magnetics
Issue number11
Publication statusPublished - 1 Nov 2014


  • Double-rotor
  • flux switching motor (FSM)
  • low cost
  • magnetless
  • optimization design

ASJC Scopus subject areas

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

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