New zero-current-transition PWM DC/DC converters without current stress

被引:75
作者
Lee, DY [1 ]
Lee, MK
Hyun, DS
Choy, I
机构
[1] Hanyang Univ, Dept Elect Engn, Seoul 133791, South Korea
[2] Pulsus Technol, Seoul 137889, South Korea
[3] Hanyang Univ, Sch Elect & Comp Engn, Seoul 133791, South Korea
[4] Korea Inst Sci & Technol, Intelligent Syst Control Res Ctr, Seoul 136791, South Korea
关键词
FB (full-bridge); soft turn-on; without additional current stress; ZCS; ZCT;
D O I
10.1109/TPEL.2002.807206
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
This paper presents novel zero-current-transition (ZCT) PWM dc/dc converters without additional current stress and conduction loss on the main switch during the resonance period of the auxiliary cell: The auxiliary cell consists of a resonant inductor, a resonant capacitor, an auxiliary switch and an auxiliary diode in parallel with the main switch and the zero-cur-rent-switching (ZCS) range's-of the main. and the auxiliary switch of the proposed converters are entirely achieved by operating the auxiliary cell. In. addition, the resonant inductor of the proposed ZCT cell helps-soft turn-on of the main switch. The theoretical analysis and the operation principle of the new ZCT technique are described in detail using a boost converter as an example: To verify the validity of the proposed ZCT technique, the simulation and the experiment were performed on the nonisolated and the isolated converter; respectively. Here, the nonisolated converter is a boost converter having 100 kHz switching frequency, 1 kW rating power, and the isolated converter is a full-bridge (FB) converter having 50 kHz switching frequency,I kW rating power.
引用
收藏
页码:95 / 104
页数:10
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