Force analysis of a buried permanent-magnet bearingless motor

Author

Dorrell, D.G. ; Ooshima, M. ; Chiba, A.

Author_Institution

Dept. of Electron. & Electr. Eng., Glasgow Univ., UK

Volume

2

fYear

2003

Firstpage

1091

Abstract

This paper describes a method for modelling a bearingless internal permanent magnet motor in order to calculate the forces on the rotor. It uses complex winding analysis and rotating field theory and compares the results to FEA analysis of the motor. The model allows the introduction of levitation and main windings and rotor eccentricity. The calculated forces are found to compare well with the FEA analysis and highlight vibrating components of the radial forces as well as the steady pull.

Keywords

AC motors; digital simulation; electric machine analysis computing; finite element analysis; force; machine theory; magnetic levitation; permanent magnet motors; rotors; vibrations; FEA analysis; bearingless internal permanent magnet motor; buried permanent-magnet bearingless motor; complex winding analysis; force analysis; levitation; main windings; radial forces; rotating field theory; rotor eccentricity; rotor forces; vibrating components; Air gaps; Boring; Couplings; Educational institutions; Inductance measurement; Magnetic analysis; Magnetic levitation; Permanent magnet motors; Rotors; Stators;

fLanguage

English

Publisher

ieee

Conference_Titel

Electric Machines and Drives Conference, 2003. IEMDC'03. IEEE International

Print_ISBN

0-7803-7817-2

Type

conf

DOI

10.1109/IEMDC.2003.1210371

Filename

1210371