Soft-switching phase-shifted PWM full-bridge DC-DC converter with reduced conduction losses - novel soft-switching DC-DC converter using tapped inductor type filter

摘要

In this paper, a novel prototype of the high frequency transformer linked full-bridge type soft-switching phase-shifted PWM control scheme DC-DC power converter using IGBTs is presented. A tapped inductor filter is newly implemented in the proposed DGDC converter topology to achieve such advantageous characteristics as wide load variation soft-switching PWM constant frequency operation, low circulating and idling currents. The effectiveness of the proposed soft-switching DC-DC power converter is verified in experiment by using 2kW 100kHz breadboard setup using IGHTs. Actual efficiency of 94% was obtained over the wide load range.