A Novel Wide-Input-Range Quasi-Resonant Forward-Flyback DC/DC Converter

被引：0
|
作者：
Li, Zihe [1 ]
Zhao, Zhenyu [1 ]
Gao, Xinyu [1 ]
Gao, Dong [1 ]
Wang, Xuejian [1 ]
机构：
[1] AVIC, Xian Aeronaut Comp Tech Res Inst, Xian 710065, Peoples R China
来源：
PROCEEDINGS OF 2023 INTERNATIONAL CONFERENCE ON WIRELESS POWER TRANSFER, VOL 4, ICWPT 2023 | 2024年 / 1161卷
关键词：
Distributed power system; Wide input range; Quasi resonance; Valley-switching; Forward-Flyback circuit;
D O I：
10.1007/978-981-97-0869-7_37
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
The paper addresses a novel quasi-resonant Forward-Flyback DC/DC converter featuring wide input range. In the proposed topology, Forward part and Flyback part share a same primary winding. Major part of power is transferred through the Forward part, while Flyback part takes responsibility to realize magnetic resetting and voltage regulation. Gain of the converter is derived. Also, characteristics in wide input range and valley-switching phenomenon is analyzed in the paper. Based on the analysis, a PWM-COT hybrid control strategy is proposed to secure a fully-resonant operation of the converter, which improves the efficiency and enhances the robustness. Design guidelines are elaborated in the paper. A 360 similar to 440 V input, 48 V/300 W output prototype is fabricated in the laboratory, which achieves a peak efficiency of 90.19%.
引用
收藏
页码：335 / 344
页数：10
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