Transient and steady-state performance of a squirrel-cage induction motor

Author

Ho, S.C. ; Hong, C.G. ; Hwang, G.J.

Author_Institution

Dept. of Power Mech. Eng., Nat. Tsing Hua Univ., Hsinchu, Taiwan

Volume

136

Issue

3

fYear

1989

fDate

5/1/1989 12:00:00 AM

Firstpage

136

Lastpage

142

Abstract

The paper gives a two-dimensional transient numerical analysis of a three-phase induction motor with a deep bar squirrel-case rotor under a voltage-forced operation. A combined explicit and implicit finite difference scheme is used to solve the problem. Regions of stator phase winding and rotor bar are solved by using a time-marching explicit scheme; the other regions of iron cores and air gap are solved together by the implicit scheme. The steady-state asymptotic solution of the electromagnetic field equation is calculated to simulate the motor operated at a constant rotor speed. The variations in torque, supplied current and rotor bar current, and their distributions with the rotor rotating speed, are obtained. Experimental work using a 1 h.p. squirrel-cage motor was carried out to verify the numerical results.<>

Keywords

difference equations; rotors; squirrel cage motors; stators; torque; transient response; 1 hp; air gap; deep bar squirrel-case rotor; electromagnetic field equation; finite difference scheme; implicit scheme; iron cores; rotor bar current; rotor rotating speed; squirrel-cage induction motor; stator phase winding; steady-state performance; supplied current; three-phase induction motor; time-marching explicit scheme; torque; two-dimensional transient numerical analysis; voltage-forced operation; Difference equations; Machine windings; Squirrel cage motors; Torque; Transient response;

fLanguage

English

Journal_Title

Electric Power Applications, IEE Proceedings B

Publisher

iet

ISSN

0143-7038

Type

jour

Filename

18935