조명전기설비학회논문지 (Journal of the Korean Institute of Illuminating and Electrical Installation Engineers)

  • 제28권8호
  • /
  • Pages.90-97
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  • 2014
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  • 1229-4691(pISSN)
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  • 2287-5034(eISSN)
한국조명전기설비학회 (The Korean Institute of IIIuminating and Electrical Installation Engineers)
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직류링크 전류를 이용한 인터리브드 양방향 컨버터의 상전류 불균형 보상 방법

Compensation of Unbalanced Phase Currents in Interleaved Bi-directional Converter with DC Link Current Sensed

  • 한정호 (서울과학기술대학교 철도전문대학원) ;
  • 최유현 (서울과학기술대학교 전기정보공학과) ;
  • 송중호 (서울과학기술대학교 전기정보공학과)
  • Han, Jungho (Dept. of Railway Electrical and Signaling Engineering, Seoul National University of Science and Technology) ;
  • Choi, Yuhyon (Dept. of Electrical and Information Engineering, Seoul National University of Science and Technology) ;
  • Song, Joongho (Dept. of Electrical and Information Engineering, Seoul National University of Science and Technology)
  • 투고 : 2014.05.19
  • 심사 : 2014.06.16
  • 발행 : 2014.08.31
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초록

This paper presents a compensation method of unbalanced phase currents in interleaved bi-directional converters. Phase currents in interleaved bi-directional converter are apt to be unbalanced due to circuit parameter error and switch operation difference. This problem causes the switch element failure and the reduced efficiency of the converter. Therefore, it is necessary that a certain balance control algorithm is provided in interleaved bi-directional converter system. In this paper, a balance control algorithm based on the circular chain control method is proposed. Further, in order to reduce the number of phase current sensors, this paper shows a simple method in which phase currents can be extracted indirectly through a DC-link current sensor in both charging and discharging modes. The validity and the effectiveness of the proposed phase currents balance control algorithm are illustrated through the simulation results.

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참고문헌

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