전력전자학회:학술대회논문집 (Proceedings of the KIPE Conference)
- 전력전자학회 2008년도 하계학술대회 논문집
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- Pages.391-393
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- 2008
A Magnetically Coupled AC/DC Boost Converter with Low Reverse Recovery and Conduction Losses
- Kim, Ju-Young (Division of Electrical Engineering School of Electrical Engineering & Computer Science, KAIST) ;
- Park, Ki-Bum (Division of Electrical Engineering School of Electrical Engineering & Computer Science, KAIST) ;
- Moon, Gun-Woo (Division of Electrical Engineering School of Electrical Engineering & Computer Science, KAIST) ;
- Youn, Myung-Joong (Division of Electrical Engineering School of Electrical Engineering & Computer Science, KAIST)
- 발행 : 2008.06.30
초록
A modified boost converter with magnetic coupling is presented to reduce the reverse recovery loss while maintaining low conduction loss of the rectifiers. By utilizing a coupled inductor and a set of diodes, the current passing the boost rectifier is transferred to an auxiliary loop before turn-off, allowing low di/dt for reduced recovery loss. Moreover, the boost inductor is brought inside the bridge rectifier to reduce conduction loss by decreasing the number of conducting diodes during switch turn-off. Experimental results of a 500W prototype are provided to verify the increase in efficiency and validity of the proposed converter.
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