DocumentCode :
1595157
Title :
The measured effects of under-voltage, over-voltage and unbalanced voltage on the efficiency and power factor of induction motors over wide ranges of load
Author :
Wallace, A.K. ; von Jouanne, A.R. ; Wiedenbrüg, E.J. ; Andrews, P.S. ; Wohlgemuth, C.W. ; Douglass, J. ; Wainwright, G.
Author_Institution :
Oregon State Univ., Corvallis, OR, USA
fYear :
1997
Firstpage :
258
Lastpage :
262
Abstract :
This paper investigates the effects of over-voltage, under-voltage and unbalanced voltage on the performance of induction machines in terms of line currents, power factor and efficiency. A set of three motors of 50 hp, 100 hp and 300 hp respectively, has been tested thoroughly at five different voltage conditions: rated voltage, 10% over-voltage, 10% under-voltage, 1.25% unbalance, and 2.5% unbalance. At each one of these voltage conditions, a load run series was performed for every motor. The data obtained shows how the different motors behave similarly, in terms of line current and power factor and differently in terms of efficiency, when subject to the particular voltage conditions
Keywords :
induction motors; 50 to 300 hp; efficiency; induction motors; line current; load run series; over-voltage effects; power factor; rated voltage; unbalanced voltage effects; under-voltage effects;
fLanguage :
English
Publisher :
iet
Conference_Titel :
Electrical Machines and Drives, 1997 Eighth International Conference on (Conf. Publ. No. 444)
Conference_Location :
Cambridge
ISSN :
0537-9989
Print_ISBN :
0-85296-696-2
Type :
conf
DOI :
10.1049/cp:19971079
Filename :
677127
Link To Document :
بازگشت