Inter-bar currents in induction machines

Author

Dorrell, D.G. ; Mill, Tje ; Rassmussen, C.B.

Author_Institution

Speed Lab., Glasgow Univ., UK

Volume

2

fYear

2001

Firstpage

729

Abstract

The paper presents a simple but effective model for predicting the effects of inter-bar rotor current on the performance of a 3-phase squirrel-cage induction motor. The model takes the form of a matrix that is solved in order to obtain values for the rotor resistance and reactance parameters in the standard per-phase equivalent circuit. The model is verified by tests on an induction motor with modified rotors (either one or two missing end-rings). The inter-bar resistance is also measured for the test-motor rotor and the results put forward with a discussion of the procedure. Good correlation is found between the predicted and experimental results.

Keywords

electric current; electric resistance; equivalent circuits; machine theory; matrix algebra; rotors; squirrel cage motors; induction machines; inter-bar resistance; inter-bar rotor current prediction model; matrix; per-phase equivalent circuit; rotor reactance parameters; rotor resistance parameters; three-phase squirrel-cage induction motor; Bars; Circuit testing; Electrical resistance measurement; Equivalent circuits; Induction machines; Induction motors; Iron; Laboratories; Predictive models; Rotors;

fLanguage

English

Publisher

ieee

Conference_Titel

Industry Applications Conference, 2001. Thirty-Sixth IAS Annual Meeting. Conference Record of the 2001 IEEE

Conference_Location

Chicago, IL, USA

ISSN

0197-2618

Print_ISBN

0-7803-7114-3

Type

conf

DOI

10.1109/IAS.2001.955521

Filename

955521