Exact Multiphysics Modeling and Experimental Validation of Spoke-Type Permanent Magnet Brushless Machines

Zaixin Song, Chunhua Liu, Hang Zhao

Research output: Journal article publicationJournal articleAcademic researchpeer-review

12 Citations (Scopus)


Multiphysics modeling and analysis are classic but vital problems for permanent magnet brushless (PMBL) machine design. Bulk of studies give analysis but lack modeling guidelines, comparisons, and rational validations. Accordingly, the principal objective of this article is to systematically investigate the accuracy and rationality among five proposed multiphysics models. Also, it will offer guidelines of modeling and progressive validation for in-depth PMBL machine design optimization from multidisciplinary aspects of electromagnetic, mechanical, vibration, and control. A combined mathematical modeling, finite element analysis, cosimulation, experimental coupling methodological approach is carried out. As a critical phenomenon, electromechanical vibration necessitates theoretical analysis of modified excitation forces considering inverter-side harmonics. Based on a typical spoke-type PMBL machine prototype and tests, the performances under different operation modes are verified, which serve as the prerequisite of vibration prediction. Finally, parallel comparisons between multiphysics simulation and experimental results verify the accuracy and rationality of proposed models, and a balance between model complexity and accuracy is thus presented.

Original languageEnglish
Article number9392291
Pages (from-to)11658-11671
Number of pages14
JournalIEEE Transactions on Power Electronics
Issue number10
Publication statusPublished - Oct 2021
Externally publishedYes


  • Cosimulation
  • magnetic force
  • multiphysics modeling
  • permanent magnet brushless machine
  • vibration

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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