Title :
An improved self-resonant PWM forward converter
Author :
Dias, Celio P. ; Pereira, Adriano A. ; Vieira, Joao B., Jr. ; Farias, Valdeir J. ; De Freitas, Luiz C.
Author_Institution :
Dept. de Engenharia Eletrica, Centro de Ciencias Exatas e Tecnologia, Uberlandia, Brazil
Abstract :
This paper presents a forward converter with a nondissipative cell which provides a soft switching converter operation. This approach is based on the principle of the self-resonance, that is: an auxiliary voltage source feeds the resonant circuit, charging a capacitor which provides the condition for the turn on and turn off zero voltage switching (ZVS) of the switches. The complete operating principle, relevant equations, simulation and experimental results are presented
Keywords :
DC-DC power convertors; PWM power convertors; resonant power convertors; switching circuits; auxiliary voltage source; capacitor charging; nondissipative cell; operating principle; resonant circuit; self-resonance principle; self-resonant PWM forward converter; simulation; soft switching converter operation; turn off zero voltage switching; turn on zero voltage switching; Equations; Feeds; Pulse width modulation; Pulse width modulation converters; RLC circuits; Switched capacitor circuits; Switches; Switching circuits; Switching converters; Zero voltage switching;
Conference_Titel :
Applied Power Electronics Conference and Exposition, 1998. APEC '98. Conference Proceedings 1998., Thirteenth Annual
Conference_Location :
Anaheim, CA
Print_ISBN :
0-7803-4340-9
DOI :
10.1109/APEC.1998.653964
