A double ZVS-PWM active-clamping forward converter: analysis,design, and experimentation

摘要

This paper presents an isolated DC-DC converter based on twonZVS-PWM active-clamping forward converters connected in series andncoupled by a single high-frequency transformer. The proposed converternfeatures no switching losses from no-load to full-load operation and lownconduction losses. This converter is suitable for high input voltagen(>400 VDC) and high power applications. Operation principles,ntheoretical analysis and design example, are presented, as well asnexperimental results taken from a 3 kW laboratory prototype