Proceedings of the KIPE Conference (전력전자학회:학술대회논문집)
- 1998.10a
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- Pages.713-718
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- 1998
SOFT SWITCHING AND LOSS ANALYSIS OF A HALF-BRIDGE DC-DC CONVERTER WITH IGBT-MOSFET PARALLEL SWITCHES
- Hong, Soon-Chan (Dept. of Electrical Eng., Dankook University) ;
- Seo, Young-Min (Dept. of Electrical Eng., Dankook University) ;
- Jang, Dong-Ryul (Dept. of Electrical Eng., Dankook University) ;
- Yoon, Duck-Yong (Dept. of Control & Measurement, Chonan National Technical College) ;
- Hwang, Yong-Ha (E-Hwa Electric Co. Ltd.,)
- Published : 1998.10.01
Abstract
Due to high power ratings and low conduction loss, the IGBT has become more attractive in high power applications. However, its slower characteristics than those of MOSFET cause severe switching losses and switching frequency limitation. This paper proposes the IGBT's soft switching concept with the help of MOSFET, where each of the IGBT and MOSFET plays its role during on-periods and switching instants. Also, the switching losses are analyzed by using the linearized modeling and the modeling and the operations of a converter are investigated to confirm the soft switching of IGBT's.
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