Title :
Analysis and design considerations of an improved ZVS full-bridge DC-DC converter
Author :
Chen, Zhong ; Ji, Biao ; Ji, Feng ; Shi, Lei
Author_Institution :
Aero-Power Sci-tech Center, Nanjing Univ. of Aeronaut. & Astronaut., Nanjing, China
Abstract :
An improved full-bridge (FB) pulse-width-modulated (PWM) converter is proposed featuring zero-voltage-switching (ZVS) of all primary switches in the entire line and load range. Compared to the conventional full bridge dc/dc converter, the proposed converter achieves ZVS with substantially reduced duty-cycle loss and circulating current. The operation principle of the circuit is described and design considerations of the converter are discussed. Finally, the operation and performance of the proposed converter is verified on a 1-kW (54-V/20-A) experimental PWM FB converter prototype operating at 100 kHz from a 300-400 V dc input.
Keywords :
DC-DC power convertors; PWM power convertors; zero voltage switching; PWM converter; ZVS full-bridge DC-DC converter; current 20 A; frequency 100 kHz; power 1 kW; pulse-width-modulated converter; voltage 300 V to 400 V; voltage 54 V; zero-voltage-switching; Bridge circuits; DC-DC power converters; Inductance; Leg; Power transformers; Pulse width modulation; Pulse width modulation converters; Switches; Switching converters; Zero voltage switching;
Conference_Titel :
Applied Power Electronics Conference and Exposition (APEC), 2010 Twenty-Fifth Annual IEEE
Conference_Location :
Palm Springs, CA
Print_ISBN :
978-1-4244-4782-4
Electronic_ISBN :
1048-2334
DOI :
10.1109/APEC.2010.5433424
