Title :
An Improved Three-Level Soft-Switching DC/DC Converter
Author :
Lou, Z.L. ; Wang, Z.S.
Author_Institution :
Zhejiang Univ., Hangzhou
Abstract :
This paper proposes an improved three-level zero-voltage zero-current soft-switching (ZVZCS) half-bridge type DC/DC converter. In order to turn off the inner switch in zero-current manner, a tapped inductor is designed to reset the primary circulating current during the freewheeling interval. Consequently, the resetting voltage and the time can be regulated conveniently by setting the turn ratios of the tapped inductor. The principle and operation modes are analyzed. Simulation and experimental results based on a 500 W/125 kHz prototype are given to verify the validity of the proposed converter
Keywords :
DC-DC power convertors; power transformers; switching convertors; zero current switching; zero voltage switching; 125 kHz; 500 W; freewheeling interval; primary circulation current; tapped inductor; three-level soft-switching DC-DC converter; transformer turn ratios; zero-voltage zero-current half-bridge type converter; Capacitors; Circuits; DC-DC power converters; Inductance; Inductors; Snubbers; Switches; Switching converters; Voltage; Zero current switching; DC/DC converter; soft switching; tapped inductor; three-level;
Conference_Titel :
Power Electronics and Motion Control Conference, 2006. IPEMC 2006. CES/IEEE 5th International
Conference_Location :
Shanghai
Print_ISBN :
1-4244-0448-7
DOI :
10.1109/IPEMC.2006.4778009
