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A Novel Maximum Power Point Tracking Control Algorithm for Photovoltaic System  

Kim, Tae-Yeop (STX 기술연구소)
Lee, Yun-Gyu (창원대 전기공학과)
An, Ho-Gyun (창원대 전기공학과)
Park, Seung-Gyu (창원대 전기공학과)
Publication Information
The Transactions of the Korean Institute of Electrical Engineers B / v.51, no.3, 2002 , pp. 133-141 More about this Journal
Abstract
Most maximum power point tracking(MPPT) control algorithm is based on Perturb and Observe(P&O) and Incremental Conductance(IncCond). In comparison with P&O and IncCond algorithm, the dynamic and tracking characteristic of IncCond algorithm is better than P&O algorithm in condition of rapidly changing solar radiation. But in the case of digital implementation, the InCond algorithm has error en decision of maximum power operation point(MPOP). To solve this problem, this paper proposes a improved IncCond algorithm, which can determine the MPOP correctly by inserting the test signal in control input. This paper proposes a novel MPPT control algorithm for the digitally implemented photovoltaic system in condition of rapidly changing solar radiation. To verify the validity of the proposed control algorithm. the computer simulation and experiment are carried out.
Keywords
Maxiumum power point tracking; Photovoltaic system; Perturb and Observe; Incremental Conductance;
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