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A Real Maximum Power Point Tracking Method for Mismatching Compensation in PV Array Under Partially Shaded Conditions

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6 Author(s)
Young-Hyok Ji ; Graduate School of Photovoltaic System Engineering, Sungkyunkwan University, Suwon, Korea ; Doo-Yong Jung ; Jun-Gu Kim ; Jae-Hyung Kim
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Conventional popular maximum power point tracking (MPPT) methods are effective under uniform solar irradiance. However, under solar irradiance mismatching conditions [partially shaded conditions (PSCs)], these MPPTs can fail for real MPPT (RMPPT), because multiple local maxima can be exhibited on the power-voltage characteristic curve. Although some researchers have worked on RMPPT under partial shading conditions, the methods have some drawbacks in terms of complexity and requirements for additional circuits, etc. In this paper, a novel MPPT method capable of RMPPT under PSCs is proposed. The performance of the proposed MPPT method is analyzed according to the RMPP position and is verified by simulation and experimental results.

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IEEE Transactions on Power Electronics  (Volume:26 ,  Issue: 4 )