Title :
A Novel ZVS PWM Phase-shifted Full-bridge Converter with Controlled Auxiliary Circuit
Author :
Zhang, Xin ; Chen, Wu ; Ruan, Xinbo ; Yao, Kai
Author_Institution :
Coll. of Autom. Eng., Nanjing Univ. of Aeronaut. & Astronaut., Nanjing
Abstract :
A new topology of full-bridge converter is proposed featuring zero-voltage-switching (ZVS) of active switches over a wide range of input voltage and load. In contrast to conventional techniques, the current through the auxiliary inductor of the proposed converter is controlled by the load current. Therefore, the ZVS operation over the wide conversion range is achieved without significantly increasing full-load conduction loss. The operation principle is described and the design considerations of converter are discussed. Performance of the proposed converter is verified with experiment results on a 1 kW, 100 kHz full-bridge converter.
Keywords :
PWM power convertors; bridge circuits; switching convertors; zero voltage switching; ZVS PWM phase-shifted full-bridge converter; active switches; auxiliary circuit control; auxiliary inductor; frequency 100 kHz; full-load conduction loss; power 1 kW; zero-voltage-switching; Bridge circuits; Capacitors; Inductors; Leg; Pulse width modulation; Pulse width modulation converters; Switches; Switching circuits; Switching converters; Zero voltage switching; Auxiliary inductor; Full bridge converter; Soft switching; Zero-voltage-switching;
Conference_Titel :
Applied Power Electronics Conference and Exposition, 2009. APEC 2009. Twenty-Fourth Annual IEEE
Conference_Location :
Washington, DC
Print_ISBN :
978-1-4244-2811-3
Electronic_ISBN :
1048-2334
DOI :
10.1109/APEC.2009.4802795
