Title :
A novel zero-Voltage and zero-current-switching full-bridge PWM converter
Author :
Song, TingTing ; Huang, Nianci
Author_Institution :
Dept. of Electr. Eng., Sichuan Univ., Chengdu, China
fDate :
3/1/2005 12:00:00 AM
Abstract :
A novel zero-voltage and zero-current-switching (ZVZCS) full-bridge pulse-width modulation converter is proposed. The ZCS condition of the lagging-leg is obtained by a simple secondary auxiliary circuit resetting the primary current during the freewheeling stage. The auxiliary circuit´s capacitor is charged by the center tape of the secondary through a diode, and the capacitor´s voltage is clamped through another diode to output capacitor, thus, the voltage stress on the rectifier is clamped. There are neither additional active switches nor resistances in the auxiliary circuit, which makes the proposed converter efficient.
Keywords :
PWM power convertors; bridge circuits; capacitors; rectifying circuits; switching convertors; zero current switching; zero voltage switching; auxiliary circuit; capacitor; diode; full-bridge PWM converter; pulse-width modulation converter; rectifier; zero-current switching; zero-voltage switching; Diodes; Pulse width modulation; Pulse width modulation converters; Rectifiers; Stress; Switched capacitor circuits; Switches; Switching circuits; Voltage; Zero current switching; Converter; pulse-width modulation (PWM); zero-voltage and zero-current-switching (ZVZCS);
Journal_Title :
Power Electronics, IEEE Transactions on
DOI :
10.1109/TPEL.2004.843016