Electromagnetic Considerations for a Six-Phase Switched Reluctance Motor Driven by a Three-Phase Inverter

Richard Martin, James Widmer, Barrie C. Mecrow, Mohammad Kimiabeigi, Abdeslam Mebarki, Neil L. Brown

Research output: Contribution to journalArticlepeer-review

31 Citations (Scopus)
85 Downloads (Pure)


The switched reluctance machine (SRM) offers advantages over other topologies, but low torque density, high torque ripple, and use of a nonstandard power converter are limitations. This paper develops a drive configuration, which facilitates the operation of a six-phase SRM using a standard three-phase inverter in order to address these limitations. The focus of the paper is an investigation of electromagnetic design aspects of two candidate SRM topologies in this six-phase context for a pure electric or hybrid electric vehicle-type application. Advances are made in the understanding of the electromagnetic design of suitable SRMs, and the conventional SRM is demonstrated as the preferred topology through parametric and finite-element analysis (FEA) design studies with reference to a given specification. Laboratory test results for a prototype machine are presented in verification of the machine design and demonstration of this drive concept as a high-torque-density candidate suitable for electric vehicle applications.
Original languageEnglish
Pages (from-to)3783 - 3791
Number of pages9
JournalIEEE Transactions on Industry Applications
Issue number5
Early online date5 May 2016
Publication statusPublished - Sept 2016
Externally publishedYes


  • Motor drives
  • multiphase electric machines
  • rotating machines
  • segmental rotor
  • switched reluctance motor
  • torque density
  • torque ripple
  • variable-speed drives


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