Grid Connected Photovoltaic Inverter System Using a New Zero-Current- Transition Scheme

새로운 Zero-Current-Transition 기법을 이용한 계통 연계형 태양광 발전 인버터 시스템

  • 최영덕 (한양대학교 전기공학과) ;
  • 이동윤 (한양대학교 전기공학과) ;
  • 현동석 (한양대학교 전기공학과)
  • Published : 2002.04.25

Abstract

This paper presents grid connected photovoltaic inverter system using a new Zero-Current-Transition(ZCT) technique. The main switches of the proposed grid connected inverter are turned off under the zero current condition by operating the auxiliary circuit and also all semiconductor devices, switches and diodes, are applied to low rated voltage regardless of the load condition. In additionally, the proposed ZCT scheme has advantages, which are without the additional current stresses and the conduction losses on the main switches during the resonance period of the auxiliary circuit. The simulation was performed to verify the validity of the proposed grid connected photovoltaic ZCT inverter system.

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