Title :
Mechanism and suppression countermeasure of voltage oscillation for full bridge converter
Author :
Chen, Zhong ; Shi, Liangchen ; Ji, Feng
Author_Institution :
Jiangsu Key Lab. of New Energy Generation & Power Conversion, Nanjing Univ. of Aeronaut. & Astronaut., Nanjing, China
Abstract :
A phase-shift full-bridge zero voltage switching (ZVS) pulse-width-modulated (PWM) converter with commutation capacitor and LC auxiliary circuit is proposed. This converter contains the advantages of small rectifier voltage oscillation as well as no duty cycle loss, and realizes ZVS for all primary switches over a wide load range. In this paper, the mechanism of the rectifier voltage oscillation is discussed in detail. The operation principle of the circuit is described and design considerations of the converter are discussed. Finally, the experimental results from a 650W/28 V, 100 kHz prototype are given to confirm the operation, validity, and features of the proposed converter.
Keywords :
PWM power convertors; power semiconductor switches; rectifying circuits; zero voltage switching; LC auxiliary circuit; commutation capacitor; frequency 100 kHz; phase-shift full-bridge ZVS PWM converter; phase-shift full-bridge zero voltage switching pulse-width-modulated converter; power 650 W; rectifier voltage oscillation mechanism; voltage 28 V; voltage oscillation mechanism; voltage oscillation suppression countermeasure; Capacitors; Inductance; Inductors; Oscillators; Rectifiers; Switches; Zero voltage switching; full-bridge converter; voltage oscillation; zero voltage switching (ZVS);
Conference_Titel :
Power Electronics and Motion Control Conference (IPEMC), 2012 7th International
Conference_Location :
Harbin
Print_ISBN :
978-1-4577-2085-7
DOI :
10.1109/IPEMC.2012.6259079
