Torque density and efficiency improvements of a switched reluctance motor without rare-earth material for hybrid vehicles

Akira Chiba, Yuichi Takano, Motoki Takeno, Takashi Imakawa, Nobukazu Hoshi, Masatsugu Takemoto, Satoshi Ogasawara

Research output: Contribution to journalArticlepeer-review

183 Citations (Scopus)

Abstract

A machine design of a switched reluctance motor having competitive torque and efficiency as well as compactness with respect to an interior permanent-magnet (IPM) synchronous motor (IPMSM) in a hybrid electric vehicle (Toyota Prius 2003) has been investigated. A torque of 400 N ·m is set as a target with an outer diameter of 269 mm with an axial length of 156 mm, including coil end lengths. In addition, a 50-kW field weakening capability must be competitive to the IPMSM. The highest efficiency of 95% is also aimed. Stator and rotor structures and iron material are investigated. Test machines are built. Static and light load tests are carried out.

Original languageEnglish
Article number5728864
Pages (from-to)1240-1246
Number of pages7
JournalIEEE Transactions on Industry Applications
Volume47
Issue number3
DOIs
Publication statusPublished - May 2011
Externally publishedYes

Keywords

  • Efficiency
  • hybrid vehicles
  • switched reluctance motor (SRM)
  • torque density

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Industrial and Manufacturing Engineering
  • Electrical and Electronic Engineering

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