Assessment on Power Quality of Grid-Connected PV System Based on Incremental Conductance MPPT Control

증분컨덕턴스 MPPT제어 기반 계통연계형 태양광발전시스템의 전력품질 평가

  • 설재웅 (한양대 공대 전기공학과) ;
  • 장재정 (한양대 공대 전기공학과) ;
  • 김동민 (한양대 공대 전기공학과) ;
  • 이승혁 (한양대 공대 전기공학과) ;
  • 김진오 (한양대 공대 전기공학과)
  • Published : 2007.01.01

Abstract

During the last years, there has been an increased interest in the new energy such as photovoltaic(PV) system from the viewpoint of environmental pollution. In this regard, this paper estimates the power quality of grid-connected PV system. As the maximum power operating point(MPOP) of photovoltaic(PV) power systems alters with changing atmospheric conditions, the efficiency of maximum power point tracking(MPPT) is important in PV power systems. Moreover, grid-connected PV system occurs some problems such as voltage inequality and harmonics. Therefore, this paper presents the results of a grid-connected PV system modeling that contains incremental conductance MPPT controller by PSCAD/EMTDC simulator and investigates the influence that can occur in the grid-connected PV system from aspect of power quality, i.e. voltage drop, total harmonic distortion(TDD) and total demand distortion(TDD). For the case study, the measured data of the PV way in Cheongwadae, Seoul, Korea is used.

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