Design and analysis of a novel dual PM machine with wide speed range

Yunchong Wang, Weinong Fu, Shuangxia Niu, Siu Lau Ho

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review


A novel structure of dual permanent magnet machine with PMs on both stator and rotor is presented as an effective option for high torque density direct-driven applications. The novel machine has PMs on both sides of rotor and stator. The PMs on the stator are designed as cylinder and can be rotated by an external driven system. Field can be regulated by the rotation of stator PMs. The structure and operation principle are introduced and the performance is analyzed with finite element method (FEM). Genetic algorithm (GA) is employed to optimize the parameters for maxim power density. Optimization result shows GA is a good selection for the optimization of this novel structure. Analysis results show that the novel structure has really high torque density and good field weakening performance.
Original languageEnglish
Title of host publicationIEEE CEFC 2016 - 17th Biennial Conference on Electromagnetic Field Computation
ISBN (Electronic)9781509010325
Publication statusPublished - 12 Jan 2017
Event17th Biennial IEEE Conference on Electromagnetic Field Computation, IEEE CEFC 2016 - Hotel Hilton Miami Downtown, Miami, United States
Duration: 13 Nov 201616 Nov 2016


Conference17th Biennial IEEE Conference on Electromagnetic Field Computation, IEEE CEFC 2016
Country/TerritoryUnited States


  • Directly-driven
  • Finite element method
  • Flux modulation
  • High torque density
  • Permanent magnets

ASJC Scopus subject areas

  • Computational Mathematics
  • Instrumentation
  • Electrical and Electronic Engineering

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