A study on a bearingless drive of a surface permanent magnet synchronous motor

Author

Sawada, Masanori ; Shindo, Y. ; Tamiya, T. ; Kawase, Y. ; Yamaguchi, Toru ; Katagiri, Hideki ; Ono, Yuto ; Kodera, Tatsuya

Author_Institution

Kawasaki Heavy Ind., Ltd., Kawasaki, Japan

fYear

2012

fDate

21-24 Oct. 2012

Firstpage

1

Lastpage

4

Abstract

This paper is concerned with a bearingless drive of a surface permanent magnet synchronous motor (SPMSM). Traditional bearingless motors have suspension windings for generating radial forces. But the motor in this paper have no suspension winding. At first, it is shown that a traditional SPMSM can generate a radial force by currents of motor windings. Second, problems and one solution for bearingless drives with a higher speed and larger scale motor are shown. The characteristics of them are numerically clarified with the three-dimensional finite element method (3D-FEM) analysis.

Keywords

finite element analysis; machine windings; synchronous motor drives; synchronous motors; 3D finite element method; SPMSM; bearingless drive; bearingless motors; motor windings; radial forces; surface permanent magnet synchronous motor; suspension windings; Eddy currents; Finite element methods; Force; Permanent magnet motors; Rotors; Synchronous motors; Windings; 3-Dimensional Finite Element Method (3D-FEM); Bearingless Motor; Eddy Current; Surface Permanent Magnet Synchronous Motor (SPMSM);

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Machines and Systems (ICEMS), 2012 15th International Conference on

Conference_Location

Sapporo

Print_ISBN

978-1-4673-2327-7

Type

conf

Filename

6401938