Transient FEM computation of radial force and torque for bearingless wound-rotor induction motors

Author

Cai, Jumei ; Henneberger, Gerhard

Author_Institution

Dept. of Electr. Machines, Aachen Inst. of Technol., Germany

Volume

2

fYear

2001

fDate

37104

Firstpage

991

Abstract

This paper presents a bearingless wound-rotor induction motor. The transient responses of radial force and torque in bearingless induction motors are computed with the transient finite element method (FEM) with rotating machine models. It is shown that a steady radial force to support the shaft weight and a constant torque independent of the bearing currents can be generated at the same time. The bearingless wound-rotor induction motor is compared to the bearingless squirrel cage induction motor with respect to the transient responses of radial force and torque. A control system is proposed to implement the combination of levitation and rotation

Keywords

control system synthesis; finite element analysis; force control; induction motors; machine control; machine theory; rotors; torque control; transient response; FEM; bearingless wound-rotor induction motors; control system; levitation control; radial force computation; rotating machine models; rotation control; torque computation; transient finite element method; transient responses; Finite element methods; Induction generators; Induction motors; Magnetic levitation; Permanent magnet motors; Reluctance motors; Rotors; Shafts; Synchronous motors; Torque;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Machines and Systems, 2001. ICEMS 2001. Proceedings of the Fifth International Conference on

Conference_Location

Shenyang

Print_ISBN

7-5062-5115-9

Type

conf

DOI

10.1109/ICEMS.2001.971845

Filename

971845