Title :
Voltage-follower control in zero-current-switched quasi-resonant power factor preregulators
Author :
Sebastián, Javier ; Martínez, Juan Angel ; Alonso, José Marcos ; Cobos, José Antonio
Author_Institution :
Dept. de Ingenieria Electr., Electron. de Computadores y Sistemas, Oviedo Univ., Spain
fDate :
7/1/1998 12:00:00 AM
Abstract :
In this paper, we propose to study the use of several zero-current-switched (ZCS) quasi-resonant converters (QRCs) (buck-boost, flyback, SEPIC, Cuk, boost, and buck) with a half-wave switch, working as power factor preregulators (PFPs) with voltage-follower control. The analysis carried out demonstrates that these converters show excellent characteristics to obtain a high power factor (PF) without using any input-current feedback loop, and they also allow high switching frequency to operate because they integrate transformer and rectifier diode parasitics into the power topology
Keywords :
DC-DC power convertors; resonant power convertors; switching circuits; voltage control; Cuk converter; SEPIC converter; ZCS; boost converter; buck converter; buck-boost converter; flyback converter; half-wave switch; high power factor; high switching frequency; quasi-resonant converters; quasi-resonant power factor preregulators; rectifier diode parasitics; transformer parasitics; voltage-follower control; zero-current-switching; Diodes; Feedback loop; Reactive power; Rectifiers; Switches; Switching converters; Switching frequency; Voltage control; Zero current switching; Zero voltage switching;
Journal_Title :
Power Electronics, IEEE Transactions on
