전력전자학회:학술대회논문집 (Proceedings of the KIPE Conference)
- 전력전자학회 2002년도 추계학술대회 논문집
- /
- Pages.121-124
- /
- 2002
개선된 영전압$\cdot$ 영전류 스위칭 3 레벨 DC/DC 컨버터
An Improved ZVZCS Three-Level DC/DC Converter
- Kim E. S. (Jeonju University) ;
- Choi S. H. (Jeonju University) ;
- Park S. S. (Jeonju University) ;
- Park J. Y. (Jeonju University) ;
- Yang S. C. (Jeonju University)
- 발행 : 2002.11.01
초록
The conventional three-level high frequency phase-shifted dc/dc converter has a disadvantage that a circulating current flows through transformer and switching devices during the freewheeling interval. Due In this circulating current and RMS current stress, conduction losses of transformer and switching devices increases. To alleviate these problems, we propose an improved three-level Zero Voltage and Zero Current Switching (ZVZCS) dc/dc converter using a tapped inductor, a snubber capacitor and two snubber diodes attached at the secondary side of transformer The proposed ZVZCS converter is verified on a 7kW, 30kHz experimental prototype.
키워드