Title :
A unified approach to modeling, synthesizing, and analyzing quasi-resonant converters
Author :
Lin, Bo-Tao ; Lee, Yim-Shu
Author_Institution :
Dept. of Electron. Eng., Hong Kong Polytech., Kowloon, Hong Kong
fDate :
11/1/1997 12:00:00 AM
Abstract :
This paper presents a general method of modeling, synthesizing, and analyzing quasi-resonant converters (QRCs), including actively clamped QRCs. First, the concept of the pulse-width modulation (PWM) switch model is generalized to encompass all PWM (nonisolated) converters. Then, by adding inductor-capacitor (LC) elements and auxiliary switches into the PWM switch, QRC families are synthesized. DC and small signal analyses can be carried out based on these switch models. Furthermore, the duality relationship between zero-voltage-switching (ZVS) and zero-current-switching (ZCS) QRCs is established systematically and rigorously
Keywords :
PWM power convertors; capacitors; inductors; resonant power convertors; switching circuits; DC signal analyses; PWM switch; ZCS; ZVS; actively clamped quasi-resonant converters; auxiliary switches; duality relationship; inductor-capacitor elements; modeling; pulse-width modulation switch model; quasi-resonant converters analysis; quasi-resonant converters synthesis; small signal analyses; zero-current-switching; zero-voltage-switching; Frequency modulation; Pulse width modulation; Pulse width modulation converters; Resonance; Switches; Switching converters; Switching frequency; Topology; Zero current switching; Zero voltage switching;
Journal_Title :
Power Electronics, IEEE Transactions on
