Development of IPMSM with rare earth and ferrite magnets

Shinnosuke Miyamoto, Akitoshi Yamada, Ichiro Miki

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

3 Citations (Scopus)

Abstract

This paper presents our development of an interior permanent magnet synchronous motor (IPMSM) that reduces the amount of rare earth magnets required for its operation by changing the rotor structure. For comparison, as a standard, we employ a conventional IPMSM that uses only rare earth magnets. We introduce 2 types of rotor structures and analyze the average torque and torque ripple using the three-dimensional finite element method (3D-FEM). Compared to that in the conventional model, the quantity of rare earth magnets in the proposed rotor structures can be reduced by 58%. Instead of solely using rare earth magnets, we combine their use with a properly arranged ferrite magnet in the rotor to offset the reduction in magnetic flux. As a result, one of the proposed models shows the same average torque as that of the conventional model. Consequently, we confirm that the average torque in the final model is approximately equal to that in the conventional model and that the torque ripple is also improved.

Original languageEnglish
Title of host publication2015 17th European Conference on Power Electronics and Applications, EPE-ECCE Europe 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9789075815221
DOIs
Publication statusPublished - 27 Oct 2015
Event17th European Conference on Power Electronics and Applications, EPE-ECCE Europe 2015 - Geneva, Switzerland
Duration: 8 Sep 201510 Sep 2015

Publication series

Name2015 17th European Conference on Power Electronics and Applications, EPE-ECCE Europe 2015

Conference

Conference17th European Conference on Power Electronics and Applications, EPE-ECCE Europe 2015
CountrySwitzerland
CityGeneva
Period8/09/1510/09/15

Keywords

  • Design
  • Permanent magnet motor
  • Reliability
  • Simulation

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  • Cite this

    Miyamoto, S., Yamada, A., & Miki, I. (2015). Development of IPMSM with rare earth and ferrite magnets. In 2015 17th European Conference on Power Electronics and Applications, EPE-ECCE Europe 2015 [7309296] (2015 17th European Conference on Power Electronics and Applications, EPE-ECCE Europe 2015). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/EPE.2015.7309296