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Operational Mode Analysis of the AT Flyback Multi-Resonant Converter  

Park, Gwi-Cheol (목포대 공대 전기공학과)
Kim, Chang-Sun (목포대 공대 전기공학과)
Publication Information
The Transactions of The Korean Institute of Electrical Engineers / v.56, no.7, 2007 , pp. 1250-1254 More about this Journal
Abstract
The multi-resonant(MR) converter has a characteristics that the parasitic components existing in the converter are absorbed into the resonant circuits. The designed MR converter could be got a high efficiency and a high power density because the switching power losses are reduced effectively due to resonant switching circuit. However, the high resonant voltage stress of switching power devices leads to the conduction loss. In this paper, it is proposed the novel alternated(AT) flyback multi-resonant converter to overcome such a drawback. The suggested converter dc input is divided by two series input filter capacitors. The resonant stress voltage is reduced to 2-3 times the input voltage without any complexity and it provides the various circuit schemes in lots of applications. The proposed flyback MR converter is verified through simulation and experiment.
Keywords
multi resonant(MR) converter; resonant voltage stress; high power density;
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