Title :
Optimum ZVS full-bridge DC/DC converter with PWM phase-shift control: analysis, design considerations, and experimental results
Author :
Redl, Richard ; Balogh, Laszlo ; Edwards, David W.
Author_Institution :
ELFI SA, Derrey-la-Cabuche, Switzerland
Abstract :
By adding a simple external commutating aid circuit to the full-bridge DC/DC converter with phase-shift control and by reducing the magnetizing inductance, optimum performance (i.e. ZVS operation and high conversion efficiency) can be achieved from full load down to almost zero load. An analysis is presented to determine the required and available commutation energies. The analysis is complemented with design considerations and experimental results taken from a 3-kW converter operating at 200-kHz clock frequency
Keywords :
bridge circuits; commutation; phase control; power convertors; pulse width modulation; switching circuits; 200 kHz; 3 kW; PWM phase-shift control; ZVS full-bridge DC/DC converter; commutating aid circuit; commutation energies; magnetizing inductance reduction; zero voltage switching; Clamps; DC-DC power converters; Inductance; Inductors; Pulse width modulation; Pulse width modulation converters; Rectifiers; Semiconductor diodes; Switching circuits; Zero voltage switching;
Conference_Titel :
Applied Power Electronics Conference and Exposition, 1994. APEC '94. Conference Proceedings 1994., Ninth Annual
Conference_Location :
Orlando, FL
Print_ISBN :
0-7803-1456-5
DOI :
10.1109/APEC.1994.316405
