A Novel Magnetic Suspension-Force Compensation in Bearingless Induction-Motor Drive With Squirrel-Cage Rotor

Author

Hiromi, Taishi ; Katou, Tatsuya ; Chiba, Akira ; Rahman, M. Azizur ; Fukao, Tadashi

Author_Institution

Dept. of Electr. Eng., Tokyo Univ. of Sci., Chiba

Volume

43

Issue

1

fYear

2007

Firstpage

66

Lastpage

76

Abstract

This paper presents an improved analysis of magnetic force compensation in a bearingless induction motor with a squirrel-cage rotor. The expressions for air-gap flux linkages are derived. Simulation blocks of suspension force are constructed. A novel control system, which compensates the delay and direction error in suspension force generation for a squirrel-cage rotor, is proposed. The efficacy of the proposed control system is established by both simulation and experiment

Keywords

air gaps; delays; induction motor drives; machine control; magnetic fluids; magnetic forces; rotors; squirrel cage motors; air gap flux linkages; bearingless induction motor drives; control system; delay compensation; magnetic suspension-force compensation; squirrel cage rotors; Air gaps; Control systems; Couplings; Force control; Induction motors; Magnetic analysis; Magnetic flux; Magnetic forces; Magnetic levitation; Rotors; Bearingless motor; component; induction motor; magnetic bearing; squirrel-cage rotor;

fLanguage

English

Journal_Title

Industry Applications, IEEE Transactions on

Publisher

ieee

ISSN

0093-9994

Type

jour

DOI

10.1109/TIA.2006.887310

Filename

4077196