Title :
A clamped transformer power supply producing zero voltage resonant transitions over the full-load range
Author :
Peterson, William A. ; Kolbet, Robert ; Saint-Pierre, Roland
Author_Institution :
Martin Marietta Control Syst., Johnson City, NY, USA
Abstract :
A circuit is described that employs zero-voltage-resonant transition (ZVRT) switching. The full-bridge inverter drives the transformer in a manner so that the transformer primary current during the off times circulates in the low side bridge switches. The amplitude of the circulating current at light loads is sufficiently enhanced by a current doubler output rectifier circuit to maintain ZVRT. The operation of the circuit is explained and analyzed. Data is presented on a breadboard that produces 5 V at 60 A from a 150 VDC source
Keywords :
bridge circuits; circuit resonance; invertors; power convertors; power supplies to apparatus; pulse width modulation; switching circuits; transformers; 150 V; 5 V; 60 A; circulating current amplitude; clamped transformer power supply; current doubler output rectifier circuit; full-bridge inverter; full-load range; low side bridge switches; off times; transformer primary current; zero voltage resonant transitions; zero-voltage-resonant transition switching; Bridge circuits; Capacitance; IEEE members; Inductance; Power supplies; Rectifiers; Resonance; Switches; 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.1994.316386
