论文信息 - A soft switched forward converter without current and voltage stress

A soft switched forward converter without current and voltage stress

This paper presents a steady-state analysis with a description of a two transistor forward converter operating in soft switching mode without voltage and current stresses. The use of a soft commutation cell allows the auxiliary switch to operate in ZCS mode at turning on and ZVS mode at turning off. The main switch S/sub 1/ operates in ZVS-ZCS at turning on and ZVS at turning off and the main switch S/sub 2/ operates in ZCS at turning on and hard switching at turning off. The output voltage is controlled using the PWM technique. Operating principles, simulation and experimental results are presented.

V.J. Farias | J.B. Vieira | E.A.A. Coelho | E.S. da Silva | L.C. de Freitas

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