논문 해외 국제전문학술지(SCI급) High-Efficiency Three-Level DC-DC Converter With Reduced Circulating Current and Rectifier Voltage Stress
- 학술지 구분 국제전문학술지(SCI급)
- 게재년월 2020-03
- 저자명 이병희,Keon-Woo Kim,Jung-Kyu Han,Gun-Woo Moon
- 학술지명 IEEE TRANSACTIONS ON POWER ELECTRONICS
- 발행처명 IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
- 발행국가 해외
- 논문언어 외국어
- 전체저자수 4
홈페이지논문 초록 (Abstract)
This paper proposes a high-efficiency three-level (TL) dc-dc converter with reduced circulating current and rectifier voltage stress by using coupled inductor in the rectifier circuit. Because of decreased circulating current, the conduction loss in the primary circuit is reduced. In addition, since the rectifier diodes with low forward voltage drop can be employed due to the small voltage stress, the conduction loss of rectifier diodes can be reduced. Therefore, the efficiency can be increased due to the reduction of the conduction losses in the primary circuit and rectifier diodes. The characteristics of the proposed converter are analyzed and compared with other TL converters. The validity of the proposed converter is verified by the experimental results of the prototype with 540-600 VDC input and 750 W (48 V15.625 A) output.