Overhang effect analysis of brushless DC motor by 3-D equivalent magnetic circuit network method

Yon Do Chun, Ju Lee, Shinji Wakao

Research output: Contribution to journalArticle

23 Citations (Scopus)


This paper investigates the permanent magnet overhang effect in brushless dc motor. The characteristics are analyzed according to the variation of symmetric overhang length and asymmetric overhang ratio. A three-dimensional equivalent magnetic circuit network (EMNC) method is used for the accurate and efficient analysis. From the results, it is quantitatively verified that the increase of overhang length enhances the linkage fluxes of the stator and the asymmetric overhang ratio has a large effect on the axial magnetic force.

Original languageEnglish
Pages (from-to)1610-1613
Number of pages4
JournalIEEE Transactions on Magnetics
Issue number3 I
Publication statusPublished - 2003 May 1



  • Axial magnetic force
  • Brushless dc motor (BLDCM)
  • Overhang effect
  • Permanent magnet (PM)
  • Three-dimensional Equivalent magnetic circuit network (EMCN) method

ASJC Scopus subject areas

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

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