Title :
A self-resonant PWM forward converter
Author :
Pereira, Adriano A. ; De Freitas, Luiz C. ; Andres, João L.
Author_Institution :
Universidade Federal de Uberlandia, Brazil
Abstract :
This paper presents a new forward power converter which operates without commutation losses. This approach is based on the principle of self-resonance, i.e. an auxiliary voltage source output feeds the resonant circuit charging a capacitor which provides the condition for the zero voltage switching (ZVS) of the main switch. Both auxiliary and main output voltages are controlled by PWM with a constant switching frequency. The complete operating principles, theoretical analysis, relevant equations, simulation and experimental results for a double-ended self-resonant PWM forward power converter are presented
Keywords :
DC-DC power convertors; PWM power convertors; circuit testing; commutation; network analysis; power capacitors; resonant power convertors; switching circuits; auxiliary voltage source; capacitor charging; commutation; constant switching frequency; equations; experiments; operating principles; self-resonant PWM forward power converter; simulation; theoretical analysis; zero voltage switching; Feeds; Pulse width modulation; Pulse width modulation converters; RLC circuits; Switched capacitor circuits; Switches; Switching circuits; Switching frequency; Voltage control; Zero voltage switching;
Conference_Titel :
Industrial Electronics, Control and Instrumentation, 1994. IECON '94., 20th International Conference on
Conference_Location :
Bologna
Print_ISBN :
0-7803-1328-3
DOI :
10.1109/IECON.1994.397771
