Journal of IKEEE (전기전자학회논문지)

Institute of Korean Electrical and Electronics Engineers (한국전기전자학회)
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Interleaved Current-fed High Step-up DC-DC Converter

인터리브드된 전류 주입형 고승압 DC-DC 컨버터

  • Lee, Junho (Dept. of Electronics and IT Media Engineering, Seoul National University of Science and Technology)
  • Received : 2020.06.05
  • Accepted : 2020.06.12
  • Published : 2020.06.30
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Abstract

An interleaved current-fed high step-up DC-DC converter is proposed. Besides high voltage gain, a low ripple input current is achieved by adopting interleaving operation. Moreover, soft-switching characteristic of the proposed converter reduces switching losses of active power switches and raise the conversion efficiency. The reverse-recovery problem of output rectifiers is also alleviated by controlling the current changing rates of diodes by utilizing the leakage inductances of transformers. Experimental results obtained on a 200W prototype are discussed.

본 논문에서는 인터리브된 전류 주입형 고승압 DC-DC 컨버터가 제안된다. 높은 전압 이득 외에도 인터리빙 방식을 채택하여 낮은 리플 입력 전류가 달성된다. 또한 제안 된 컨버터의 소프트 스위칭 특성은 전력 스위치의 스위칭 손실을 줄이고 변환 효율을 높인다. 변압기의 누설 인덕턴스를 활용하여 다이오드의 전류 변화율을 제어함으로써 출력 정류기의 역 회복 문제도 완화된다. 200W 프로토 타입에서 얻은 실험 결과에 대해 설명한다.

Keywords

References

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