Title :
ZVS PWM full-bridge converters with dual auxiliary circuits
Author :
Moschopoulos, Gerry ; Jain, Praveen
Author_Institution :
Dept. of Electr. & Comput. Eng., Concordia Univ., Montreal, Que., Canada
Abstract :
The zero-voltage switched (ZVS) pulsewidth modulated (PWM) full-bridge (FB) converter is widely used in industry because it can operate with soft-switching and fixed frequency control. This converter, however, loses its ZVS capability under light load conditions, and some auxiliary circuitry is usually added to extend its ZVS range. This paper examines several auxiliary circuits, explaining how they operate, and comparing their respective advantages and disadvantages. Guidelines for the selection of auxiliary circuits for various operating conditions are given
Keywords :
PWM power convertors; bridge circuits; frequency control; load (electric); switching circuits; ZVS PWM full-bridge power converters; dual auxiliary circuits; fixed frequency control; light load conditions; soft-switching; Capacitance; Guidelines; Inductors; Leg; Pulse width modulation; Pulse width modulation converters; Switches; Switching circuits; Switching converters; Zero voltage switching;
Conference_Titel :
Telecommunications Energy Conference, 2000. INTELEC. Twenty-second International
Conference_Location :
Phoenix, AZ
Print_ISBN :
0-7803-6407-4
DOI :
10.1109/INTLEC.2000.884306
