Proceedings of the KIPE Conference (전력전자학회:학술대회논문집)
- 2003.11a
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- Pages.234-237
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- 2003
Comparative Study of Maximum Power Point Tracking Algorithms Using PV Array Simulator
태양전지 모의 전원을 이용한 MPPT 알고리즘의 비교 고찰
- Jung Youngseok (Korea Institute of Energy Research) ;
- So Junghun (Korea Institute of Energy Research) ;
- Yu Gwonjong (Korea Institute of Energy Research) ;
- Choi Jaeho (Chungbuk National University)
- Published : 2003.11.01
Abstract
As the maximum power operating point (MPOP) of photovoltaic (PV) power systems changes with changing atmospheric conditions, the efficiency of maximum power point tracking (MPPT) is important in PV power systems. Many MPPT techniques have been considered in the past, but techniques using microprocessors with appropriate MPPT algorithms are favored because of their flexibility and compatibility with different PV arrays. Although the efficiency of these MPPT algorithms is usually high, it drops noticeably in case of rapidly changing atmospheric conditions. In this paper, we proposed a new MPPT control method called improved perturb and observe method (ImP&O), anda simple voltage and current characteristic equation of a PV array for PV array simulator. Experimental results verify the accuracy and excellent performance of the proposed MPPT method. ImP&O algorithm is very simple, and has successful tracked the MPOP, even in case of rapidly changing atmospheric conditions.
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