Title :
Quasi-active power factor correction: the role of variable inductance
Author :
Wölfle, W. ; Hurley, W.G. ; Lambert, Sebastien
Author_Institution :
Convertec Ltd., Wexford, Ireland
fDate :
6/23/1905 12:00:00 AM
Abstract :
Three variable inductors have been evaluated to provide power factor correction in a 150 W AC/DC power supply. The constant air-gap inductor meets the harmonic limits, but is larger, bulky and more costly. The swinging inductor is the least suitable because these is a very sharp drop in the effective inductance characteristic over a small current range, this has the effect of introducing large spikes of current which in turn degrade the power factor. It has been shown that the sloped air-gap (SAG) inductor has the most suitable inductance versus current characteristics to provide power factor correction to meet harmonic limits over a wide power range
Keywords :
AC-DC power convertors; harmonic distortion; inductance; power conversion harmonics; power factor correction; power inductors; power supplies to apparatus; rectifying circuits; 150 W; AC/DC power supply; constant air-gap inductor; harmonic limits; inductance-current characteristics; quasi-active power factor correction; sloped air-gap inductor; swinging inductor; variable inductance; variable inductors; wide power range; Active filters; Air gaps; Filtering; Inductance; Inductors; Power factor correction; Power harmonic filters; Power system harmonics; Reactive power; Rectifiers;
Conference_Titel :
Power Electronics Specialists Conference, 2001. PESC. 2001 IEEE 32nd Annual
Conference_Location :
Vancouver, BC
Print_ISBN :
0-7803-7067-8
DOI :
10.1109/PESC.2001.954427
