Proceedings of the KIPE Conference (전력전자학회:학술대회논문집)

The Korean Institute of Power Electronics (전력전자학회)
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Grid-Connected Inverter Using the Negative Conductance of Photovoltaic Power System

태양광 발전시스템의 네가티브 컨덕턴스를 이용한 계통연계형 인버터

  • Lee, Chang-Hee (Dept. of Electrical Engineering, Chungbuk National University) ;
  • Park, Ki-Lack (Dept. of Electrical Engineering, Chungbuk National University) ;
  • Choi, Jae-Ho (Dept. of Electrical Engineering, Chungbuk National University)
  • 이창희 (충북대학교 전기공학과) ;
  • 박기락 (충북대학교 전기공학과) ;
  • 최재호 (충북대학교 전기공학과)
  • Published : 2002.07.01
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Abstract

This paper proposes a grid-connected inverter using the negative conductance of PV power system, which has four IGBTs and simple controller. Most of modern electric loads generate the current harmonics and the line voltage distortion. The new solar-to-ac converter(STAC) provides by emulating a negative conductance load to the line voltage, so the current harmonics from STAC is canceled the effect of the harmonics from other loads. As a result, the line voltage distortion is decreased. The proposed system have low cost, small size, and light weight compared to conventional photovoltaic converter

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