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계통연계형 태양광 발전시스템의 태양전지 출력단 전압제어에 관한 연구
한찬영(C.Y. Han),고재석(J.S.Gho),최규하(G.H.Choe),김흥근(H.G. Kim),신우석(W.S. Shin) 전력전자학회 2000 전력전자학술대회 논문집 Vol.2000 No.11
Recently the problem of energy branch become worse increasingly. Therefore many researches about new energy source are processing in several places around the world. Especially solar energy has many advantages like as purity and infinity. Photovoltaic (PV)system can be classified into two types : One is stand alone type, and the other is utility interactive one. Utility interactive type PV system need some technology that Maximum peak power tracking (MPPT) and Anti-islanding and Active power filter (APF). For APF operation dc-link voltage should be high to supply sufficient output current which needed for harmonic current compensation, so usually DC-DC converter is used for boost. In this paper DC-DC converter for PV system and controller for dc-link voltage control are analyzed and designed.
계통연계형 태양광 발전시스템의 향상된 MPPT 알고리즘
이상용(S.Y.Lee),한찬영(C.Y.Han),고재석(J.S.Gho),최규하(G.H.Choe),목형수(H.S Mok) 전력전자학회 1999 전력전자학술대회 논문집 Vol.- No.-
The photovoltaic systems with solar cell array provide electrical energy to the utility/consumers, which are becoming one of the promising energy substitutes. The photovoltaic system can be classified into two types: One is the stand-alone type. and the other utility interactive one. The latter can return the generated power' to the utility, but the former can't. The utility interactive systems are so valuable for peak power cut in summer season. In the photovoltaic systems the' maximum power point tracking (MPPT) has been studied for the increase of the generating energy of the photovoltaic system. There are many control methods of MPPT, but a new MPPT algorithm is proposed to overcome the disadvantages of the conventional ones, and as a result the proposed method enables to improve both tracking ability and generating efficiency of photo-system without DC chopper
김응진(E.J. Kim),한찬영(C.Y. Han),최규하(G.H. Choe),이상민(S.M. Lee) 전력전자학회 2000 전력전자학술대회 논문집 Vol.2000 No.11
In this paper, we investigate accurately the input-output characteristic of single-phase diode rectifier. The diode rectifier has some advantages of simplicity, cost, and high-efficiency. But it has some defects which THD of input current, low PF, and voltage drop of output side. In order to compensate it, we analyzed using the parameter variation and introduced capacitor insertion method for reducing the distortion and increasing the PF.
전원측 무효전력 보상기능을 갖는 계통연계형 태양광 발전 시스템의 해석 및 설계
이상용(J.S. Gho),고재석(S.Y. Lee),한찬영(C.Y. Han),이정락(J. R. Lee),최규하(G.H. Choe),목형수(H.S. Mok) 전력전자학회 1999 전력전자학술대회 논문집 Vol.1999 No.7
The application field of photovoltaic system has been increased widely. In the application of photovoltaic system, the utility interactive photovoltaic system(UIPVS) has benefits of not only the home energy saving in domestic system but also reduction of peak power which threaten the capacity of power plant equipment when the maximum power consumption is occurred in daytime This paper represents the effect of the nonlinear AC load which connected to the UlPVS with parallel connection and introduces the active power filtering(APF) techniques to the UIPVS for the reactive power compensation. The enhancement of source side power quality using APF algorithm is verified using simulation