Title :
A novel full-bridge ZVZCS PWM DC/DC converter with a secondary clamping circuit
Author :
Choo, Byeong-Ho ; Lee, Dong-Yun ; Yoo, Sang-Bong ; Hyun, Dong-seok
Author_Institution :
Dept. of Electr. Eng., Hanyang Univ., Seoul, South Korea
Abstract :
This paper proposes a novel secondary clamping circuit for soft switching FB (full-bridge) PWM DC/DC converter. The proposed circuit eliminates the reflected output current which is reflected from the secondary side to the primary side so that it reduces the needless conduction losses of the primary side during the current circulating mode. Also, it ensures the zero-voltage/zero-current switching of the leading/lagging leg switches. The characteristics of the proposed clamping circuit are investigated and the validity is verified by the simulation and the experimental results
Keywords :
DC-DC power convertors; PWM power convertors; bridge circuits; losses; switching circuits; conduction losses reduction; current circulating mode; full-bridge ZVZCS PWM DC/DC converter; leading/lagging leg switches; reflected output current elimination; secondary clamping circuit; soft switching; zero-current switching; zero-voltage switching; Circuits; Clamps; DC-DC power converters; Inductors; Insulated gate bipolar transistors; Leg; Power semiconductor switches; Pulse width modulation; Pulse width modulation converters; Zero voltage switching;
Conference_Titel :
Power Electronics Specialists Conference, 1998. PESC 98 Record. 29th Annual IEEE
Conference_Location :
Fukuoka
Print_ISBN :
0-7803-4489-8
DOI :
10.1109/PESC.1998.703115
