Title :
A ZVT buck converter using a feedback resonant circuit
Author :
De Freitas, Luiz Carlos ; Gomes, Paul Roberto Coelho
Author_Institution :
Univ. Federal de Uberlandia, Brazil
Abstract :
This paper presents a buck DC-to-DC power converter using a novel lossless commutation cell for high switching frequency and high power operation. The proposed cell consists of main and auxiliary switches, with ZVS and ZCS switching characteristics, respectively. Converter control using this cell is realized by PWM with constant switching frequency operation. Operation principles, theoretical analysis, relevant equations, state space phase, simulation and experimental results for the buck converter are presented
Keywords :
circuit resonance; commutation; feedback; power convertors; pulse width modulation; switching circuits; PWM; ZCS; ZVS; buck DC-to-DC power converter; feedback resonant circuit; lossless commutation; state space; switching circuits; switching frequency;
Conference_Titel :
Power Electronics and Applications, 1993., Fifth European Conference on
Conference_Location :
Brighton
