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In this paper, A novel ZVZCS active clamped dual switch flyback converter was proposed, whose main switches and auxiliary switch all realize zero-voltage turning-on, and the rectifier diode on the secondary side also achieves ZCS. It overcomes the demerit of high voltage stress on the main switch in conventional flyback converter; meanwhile the duty circle can extend to more than 50% by slope compensation...
In this paper, a family of ZVZCS dual switch flyback dc-dc converters were analyzed, which all feature soft-switching, low voltage stresses and good adaptability of wide range input. The main switches and auxiliary switch of these converters realize zero-voltage turning-on (ZVS) and the rectifier diode achieves zero-current turning-off (ZCS). They adopt different auxiliary circuit to realize soft-switching...
A novel wide range input front-end dc-dc converter featuring in optimized overall input range efficiency is presented in this paper. This proposed converter combines the two kinds of dual switch ZVS forward-flyback topologies together, while the DC Gain for these two kinds of forward-flyback topologies is different and that of secondary full-bridge rectifier is doubled than current-doubler rectifier...
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