Basic characteristics of a permanent-magnet type bearingless motor with positive salient pole

Hirokazu Kusayanagi, Masatsugu Takemoto, Yasuhiro Tanaka, Akira Chiba, Tadashi Fukao

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

2 Citations (Scopus)

Abstract

Various types of permanent-magnet type bearingless motors, which have integrated magnetic bearings with permanent magnet synchronous motors, have been developed actively. However, these motors cannot effectively generate electromagnetic suspension force for rotor shaft suspension, because suspension flux is attenuated owing to passing through high magnetic reluctance of permanent magnets. Accordingly, the authors have proposed a novel permanent-magnet type bearingless motor with positive salient pole that inductance Ld in the d-axis direction is greater than inductance Lq in the q-axis direction. In previous papers, it was shown with 2D-FEM that the proposed motor can generate the suspension force effectively, because the suspension flux does not pass through the permanent magnets. This paper introduces basic characteristics of torque and suspension force in the proposed motor with test results of a prototype machine.

Original languageEnglish
Title of host publicationProceeding of International Conference on Electrical Machines and Systems, ICEMS 2007
Pages1698-1703
Number of pages6
DOIs
Publication statusPublished - 2007
Externally publishedYes
EventInternational Conference on Electrical Machines and Systems, ICEMS 2007 - Seoul, Korea, Republic of
Duration: Oct 8 2007Oct 11 2007

Publication series

NameProceeding of International Conference on Electrical Machines and Systems, ICEMS 2007

Other

OtherInternational Conference on Electrical Machines and Systems, ICEMS 2007
CountryKorea, Republic of
CitySeoul
Period10/8/0710/11/07

Keywords

  • Bearingless motors
  • Magnetic bearings
  • Magnetic levitation
  • Permanent magnet motors
  • Synchronous motors

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Electrical and Electronic Engineering

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