Title :
An improved self-resonant PWM forward converter
Author :
Dias, C.de P. ; Pereira, Adriano Alves ; Farias, Valdeir José ; Vieira, João Batista, Jr. ; De Freitas, Luiz Carlos
Author_Institution :
Dept. de Engenharia Eletrica, Univ. Fed. de Uberlandia, Brazil
fDate :
5/1/2000 12:00:00 AM
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 self-resonance, that is: an auxiliary voltage source feeds the resonant circuit, charging a capacitor which provides the condition for zero voltage switching (ZVS) turn on and turn off of the switches. The complete operating principle, relevant equations, simulation, and experimental results are presented
Keywords :
PWM power convertors; capacitors; resonant power convertors; switching circuits; ZVS; auxiliary voltage source; capacitor charging; nondissipative cell; resonant circuit; self-resonance; self-resonant PWM forward converter; soft switching converter operation; turn off; 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;
Journal_Title :
Power Electronics, IEEE Transactions on
