Title :
An improved full-bridge zero-voltage-transition PWM DC/DC converter with zero-voltage/zero-current switching of the auxiliary switches
Author :
Lee, Dong-Yun ; Lee, Byoung-kuk ; Hyun, Dong-seok
Author_Institution :
Dept. of Electr. Eng., Hanyang Univ., Seoul, South Korea
Abstract :
In this paper, an improved full-bridge (FB) zero-voltage-transition (ZVT) PWM DC/DC power converter topology is proposed. The proposed FB-ZVT PWM DC/DC power converter has the advantage of achieving zero voltage and zero current switching of the auxiliary switches using an auxiliary network. The auxiliary network is simply composed of a saturable inductor, auxiliary capacitors and auxiliary diodes. With the help of the proposed auxiliary network, the improved FB-ZVT PWM DC/DC power converter has much improved characteristics with respect to the overall system efficiency. The operation principles are explained in detail and several interesting simulation and experimental results verify the validity of the proposed circuit from a 83 kHz, 1 kW prototype power converter using IGBTs
Keywords :
DC-DC power convertors; PWM power convertors; bridge circuits; insulated gate bipolar transistors; power bipolar transistors; power semiconductor switches; switching circuits; 1 kW; 83 kHz; auxiliary capacitors; auxiliary diodes; auxiliary network; auxiliary switches; full-bridge ZVS PWM DC/DC power converter; operation principles; power IGBT switches; saturable inductor; zero current switching; zero voltage switching; DC-DC power converters; Inductors; Network topology; Pulse width modulation; Pulse width modulation converters; Switched capacitor networks; Switches; Switching converters; Zero current switching; Zero voltage switching;
Conference_Titel :
Applied Power Electronics Conference and Exposition, 1998. APEC '98. Conference Proceedings 1998., Thirteenth Annual
Conference_Location :
Anaheim, CA
Print_ISBN :
0-7803-4340-9
DOI :
10.1109/APEC.1998.653992
