Hysteresis effects of laminated steel materials on detent torque in permanent magnet motors

Y. B. Li, Shuangxia Niu, Siu Lau Ho, Yanhai Li, Weinong Fu

Research output: Journal article publicationJournal articleAcademic researchpeer-review

16 Citations (Scopus)


Hysteresis effects of laminated steel materials on the detent torque in permanent magnet (PM) motors are described physically. There are many methods to simulate hysteresis effects. However most studies only focus on loss calculation but not on other important issues. Based on field orientation interpolation method, four-quadrant hysteresis effects are taken into consideration in the proposed cogging torque computation. Simulation results using finite element analysis (FEA) show that laminated materials with high hysteresis effects give higher detent torque when compared to those with narrow hysteresis loops. Two brushed type PMDC motors, with a 4-pole, 22-slot configuration and with different laminated steel materials, are built, and their test data are used to validate the analysis.
Original languageEnglish
Article number6027757
Pages (from-to)3594-3597
Number of pages4
JournalIEEE Transactions on Magnetics
Issue number10
Publication statusPublished - 1 Oct 2011


  • Detent torque
  • finite-element analysis
  • frictional torque
  • hysteresis effect
  • magnetic field
  • permanent magnet

ASJC Scopus subject areas

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

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