Title :
Inter-bar currents in induction machines
Author :
Dorrell, D.G. ; Mill, Tje ; Rassmussen, C.B.
Author_Institution :
Speed Lab., Glasgow Univ., UK
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;
Conference_Titel :
Industry Applications Conference, 2001. Thirty-Sixth IAS Annual Meeting. Conference Record of the 2001 IEEE
Conference_Location :
Chicago, IL, USA
Print_ISBN :
0-7803-7114-3
DOI :
10.1109/IAS.2001.955521
