Study on a Modified CLLC Converter Paralleling a Resonant Branch With the Transformer for Wide Voltage Range Applications
Hongjun Wang,
Cheng Cheng,
Shaojun Xie
Abstract:In this paper, a modified bidirectional CLLC DC/DC converter is proposed to improve the efficiency in wide voltage range applications. The proposed converter adopts a LC series resonant branch parallel with the transformer, so that the equivalent inductance of the parallel branch and the transformer magnetizing inductor varies with the switching frequency. When the required gain is small and the operating frequency is high, the switch's turn-off current and the circulating power can be reduced through the larg… Show more
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