Apply to in-wheel machine of permanent magnet vernier machine using NdFeB bonded magnet Fundamental study

R. Hosoya, S. Shimomura

Research output: Chapter in Book/Report/Conference proceedingConference contribution

16 Citations (Scopus)

Abstract

The authors have focused attention on an outer rotor permanent magnet vernier machine, ORPMVM, as a high-efficiency in-wheel machine. A general PMVM has two characteristics: generating a large torque in a lower speed, the torque per current is larger. These characteristics are suitable for a directly driven in-wheel machine. However, the machine structure of the PMVM causes much higher harmonics in its air gap flux density, and in the PMVMs with NdFeB sintered magnets, the magnets generate high heat by large eddy current due to own high electric conductivity even in a comparatively low speed range. In order to overcome that issue, the authors have employed NdFeB bonded magnet with high electric resistance and moreover have cleared two new issues: decreased torque by using bonded magnets, demagnetization due to armature reaction. As a result, the maximum efficiency obtained from a calculation based on FEA has exceeded 96 %.

Original languageEnglish
Title of host publication8th International Conference on Power Electronics - ECCE Asia
Subtitle of host publication"Green World with Power Electronics", ICPE 2011-ECCE Asia
Pages2208-2215
Number of pages8
DOIs
Publication statusPublished - 2011 Aug 31
Event8th International Conference on Power Electronics - ECCE Asia: "Green World with Power Electronics", ICPE 2011-ECCE Asia - Jeju, Korea, Republic of
Duration: 2011 May 302011 Jun 3

Publication series

Name8th International Conference on Power Electronics - ECCE Asia: "Green World with Power Electronics", ICPE 2011-ECCE Asia

Conference

Conference8th International Conference on Power Electronics - ECCE Asia: "Green World with Power Electronics", ICPE 2011-ECCE Asia
CountryKorea, Republic of
CityJeju
Period11/5/3011/6/3

Keywords

  • In-wheel
  • NdFeB bonded magnets
  • outer-rotor
  • vernier machine

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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