Title :
Enhanced harmonic injection for determination of harmonic loss in induction machines
Author :
Bradley, K.J. ; Clare, J.C. ; Magill, R. ; Ferrah, A. ; Wheeler, P. ; Sewell, P. ; Cao, W.
Author_Institution :
Nottingham Univ., UK
Abstract :
This paper compares direct, by calorimeter, and indirect, by harmonic injection, methods for measurement of inverter induced, harmonic power loss across a range of induction motors from 1.1 to 30 kW. Techniques to obtain the necessary experimental precision are described. Comparisons between segregated losses for the machines operating on sinusoidal supplies show a link between iron loss and high frequency PWM induced loss. Iron loss is not a constant proportion of total loss for all machines so that neither is harmonic loss independent of machine design
Keywords :
PWM invertors; induction motors; loss measurement; power conversion harmonics; 1.1 to 30 kW; enhanced harmonic injection; harmonic loss determination; high frequency PWM induced loss; induction machines; induction motors; inverter induced harmonic power loss; iron loss; loss measurement; segregated losses; sinusoidal supplies;
Conference_Titel :
Power Electronics and Variable Speed Drives, 2000. Eighth International Conference on (IEE Conf. Publ. No. 475)
Conference_Location :
London
Print_ISBN :
0-85296-729-2
DOI :
10.1049/cp:20000247
