Topology design method of flux barrier in IPM motor by means of genetic algorithm implemented by multistep procedure

Yoshifumi Okamoto, Yusuke Tominaga, Shinji Wakao, Shuji Sato

Research output: Contribution to journalArticle


This study derives a high performance flux barrier for an interior permanent magnet (IPM) motor using binary-based topology optimization (TO). TO has a higher degree of optimization than size or shape optimization. An IPM motor has many design parameters including the current phase angle, core shape of rotor and stator, and magnet position and shape. The flux barrier in an IPM motor plays a particularly important role, influencing several characteristics. We apply TO, using a multistep genetic algorithm, to the rotor core in order to determine a flux barrier with the highest torque performance.

Original languageEnglish
Pages (from-to)381-387
Number of pages7
JournalInternational Journal of Applied Electromagnetics and Mechanics
Issue number2
Publication statusPublished - 2014 Jan 1



  • Flux barrier
  • IPM motor
  • genetic algorithm
  • multistep procedure
  • topology optimization

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Electrical and Electronic Engineering

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