Open AccessHigh‐efficiency high step‐up PWM resonant converter
Author(s) -
Cai Yaping,
Xu Jianping,
Chen Zhangyong,
Zhou Xiang
Publication year - 2015
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
ISSN - 1350-911X
DOI - 10.1049/el.2014.3646
Subject(s) - pulse width modulation , boost converter , buck–boost converter , inductor , ćuk converter , transformer , flyback converter , electronic engineering , buck converter , forward converter , rlc circuit , voltage , energy conversion efficiency , physics , electrical engineering , engineering , capacitor
A novel high‐efficiency high step‐up pulse‐width modulation (PWM) resonant converter is proposed. It achieves high‐voltage step‐up by connecting the outputs of the boost converter cell and the isolated single‐ended PWM resonant converter cell in series, and high efficiency by zero current switching for the diode on the secondary side of the transformer of the single‐ended PWM resonant converter cell. The boost converter cell in the proposed converter can not only step‐up voltage, but also absorbs the leakage inductor energy during the turn‐off interval of the power switch to improve power conversion efficiency. Experimental results of a 100 W 35 V/200 V prototype are presented to verify the analysis results of the proposed converter.