Development of a Consequent-Pole-PM-Type Axial-Gap Motor with DC Field Winding

Tomohira Takahashi, Masatsugu Takemoto, Satoshi Ogasawara, Toru Ogawa, Hideaki Arita, Akihiro Daikoku

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


Permanent magnet synchronous motors for electric vehicles should meet three criteria: high maximum torque, high efficiency at low torque, and constant output in a wide speed range. However, meeting these criteria has come with a trade-off in terms of the magnitude of the field magnetic flux. We propose a consequent-pole-PM-type axial-gap motor with ferrite PMs and field windings, which has structure variable field magnetic flux. In order to examine the operational characteristics of the proposed motor, we produced and tested a prototype. Experimental results show that the proposed structure meets all of the three criteria above.

Original languageEnglish
Article number9442864
Pages (from-to)4363-4375
Number of pages13
JournalIEEE Transactions on Industry Applications
Issue number5
Publication statusPublished - Sept 1 2021


  • Axial gap motors
  • consequent pole
  • electric vehicles
  • ferrite permanent magnets
  • field windings
  • hybrid excitation
  • permanent magnet synchronous motors (PMSMs)

ASJC Scopus subject areas

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


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