Dual-bridge DC-DC converter with soft switching features

This paper presents a dual-bridge DC-DC power converter with soft switching features applying a new PWM modulation technique. This technique maintains ZVS commutation, while eliminating auxiliary circuits used in previous versions. The dual-bridge converter, with input series connection, is suitable for high voltage applications (>400 V). Theoretical analysis and experimental results taken from a 3 kW-laboratory prototype are presented.