A new self-resonant PWM forward converter

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 off zero voltage switching (ZVS) of the switches. The complete operating principle, relevant equations, simulation and experimental results are presented.

[1]  H.L. Hey,et al.  An optimum ZVS-PWM DC-to-DC converter family: analysis, simulation and experimental results , 1992, PESC '92 Record. 23rd Annual IEEE Power Electronics Specialists Conference.

[2]  L.C. de Freitas,et al.  A high-power high-frequency ZCS-ZVS-PWM buck converter using a feedback resonant circuit , 1993, Proceedings of IEEE Power Electronics Specialist Conference - PESC '93.

[3]  L.C. de Freitas,et al.  A novel ZCS-ZVS-PWM DC-DC buck converter for high power and high switching frequency: analysis, simulation and experimental results , 1993, Proceedings Eighth Annual Applied Power Electronics Conference and Exposition,.

[4]  Fred C. Lee,et al.  High-frequency quasi-resonant converter technologies , 1988, Proc. IEEE.

[5]  L.C. de Freitas,et al.  A novel family of DC-DC self-resonant PWM converters , 1994, Proceedings of IECON'94 - 20th Annual Conference of IEEE Industrial Electronics.