Characteristics of a squirrel cage induction motor

Author

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

Author_Institution

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

Volume

138

Issue

3

fYear

1991

fDate

5/1/1991 12:00:00 AM

Firstpage

115

Lastpage

124

Abstract

The authors investigate the magnetic field distribution in a 1 hp three-phase induction motor. Utilising a triangular finite-element method, the magnetic field in the motor is analysed at various balanced magnetomotive forces, and four different rotor positions. From the field solutions, the flux linkages and the slot leakages are found for a range of magnetising currents. An experiment using a straight laminated rotor core without aluminium bars is tested at the four locked positions by using a 20 kVA balanced three-phase transformer with a frequency of 60 Hz. The stator currents, line-to-line voltages and power factors are measured. The experimental data are compared with the calculated results and a reasonable agreement is found

Keywords

finite element analysis; magnetic fields; rotors; squirrel cage motors; 1 hp; 20 kVA; 3-phase induction motor; 3-phase transformer; 60 Hz; flux linkages; laminated rotor core; line-to-line voltages; magnetic field distribution; magnetomotive forces; power factors; rotor positions; slot leakages; squirrel-cage motors; stator currents; triangular finite-element method;

fLanguage

English

Journal_Title

Electric Power Applications, IEE Proceedings B

Publisher

iet

ISSN

0143-7038

Type

jour

Filename

75441