Title :
Comparative study of unity power factor circuits
Author :
Cheng, K.W.E. ; Evans, P.D.
Author_Institution :
Sch. of Electron. & Electr. Eng., Birmingham Univ., UK
Abstract :
This paper investigates the use of boost and Cuk topologies in unity power factor correction circuits. The topologies include classical switched mode power supply, quasi-resonant zero current switching and extended-period quasi-resonant circuits. They all operate with continuous input current. Control methods are presented. They are duty ratio, switching frequency and constant frequency-extended period. The implications of power factor, harmonic distortion and switching frequency on the topologies are presented in order to compare performance
Keywords :
DC-DC power convertors; harmonic distortion; power factor correction; resonant power convertors; switched mode power supplies; switching circuits; Cuk topologies; boost topologies; constant frequency-extended period control; continuous input current; duty ratio control; extended-period quasi-resonant circuits; harmonic distortion; quasi-resonant zero current switching; switched mode power supply; switching frequency control; unity power factor circuits; unity power factor correction circuits;
Conference_Titel :
Power Electronics and Variable-Speed Drives, 1994. Fifth International Conference on
Conference_Location :
London
DOI :
10.1049/cp:19941035