Half-bridge flyback converter with lossless passive snubber and interleaved technique

被引：14
作者：
Mohammadian, Navid [1 ]
Yazdani, Mohammad Rouhollah [1 ]
机构：
[1] Islamic Azad Univ, Isfahan Khorasgan Branch, Dept Elect Engn, Arqhavanieh Blvd,Jey St, Esfahan, Iran
来源：
IET POWER ELECTRONICS | 2018年 / 11卷 / 02期
关键词：
snubbers; power convertors; electromagnetic interference; half-bridge flyback converter; lossless passive snubber; interleaved technique; hard-switching flyback converters; power application; zero current switching; switching losses; EMI; power; 200; W; BOOST; EFFICIENCY;
D O I：
10.1049/iet-pel.2017.0360
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Hard-switching flyback converters are widely used in the low power application but suffer from high electromagnetic emissions, current ripples, and low efficiency. To overcome these problems, a half-bridge flyback converter with a new lossless passive snubber is proposed using an interleaved structure. All switches of the proposed converter turn on under zero current switching and turn off under zero voltage switching which decreases the switching losses and electromagnetic interference (EMI). Theoretical analysis of the proposed converter is presented and verified by the experimental results of a 200W prototype. In addition to the 7% efficiency improvement, the proposed converter has lower EMI in comparison with its hard-switching converter.
引用
收藏
页码：239 / 245
页数：7
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