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http://dx.doi.org/10.5370/KIEE.2012.61.12.1864

MPPT Control of Photovoltaic System using HBPI Controller  

Ko, Jae Sub (Dept. of Electric Control Engineering, Sunchon National Univ.)
Chung, Dong-Hwa (Dept. of Electric Control Engineering, Sunchon National Univ.)
Publication Information
The Transactions of The Korean Institute of Electrical Engineers / v.61, no.12, 2012 , pp. 1864-1871 More about this Journal
Abstract
This paper proposes the hybrid proportional integral(HBPI) controller for maximum power point tracking(MPPT) control of photovoltaic system. The output characteristics of the solar cell are a nonlinear and affected by a temperature, the solar radiation and influence of a shadow. The MPPT control is a very important technique in order to increase an output and efficiency of the photovoltaic system. The conventional constant voltage(CV), perturbation and observation(PO) and incremental conductance(IC) are the method which finding maximum power point(MPP) by the continued self-excitation vibration, and uses the fixed step size. If the fixed step size is a large, the tracking speed of maximum power point is faster, but the tracking accuracy in the steady state is decreased. On the contrary, when the fixed step size is a small, the tracking accuracy is increased and the tracking speed is slower. Therefore, in order to solve these problems, this paper proposes HBPI controller that is adjusted gain of conventional PI control using fuzzy control, and the maximum power point tracks using this controller. The validity of the controller proposed in this paper proves through the results of the comparisons.
Keywords
Photovoltaic; MPPT altorithm; PI; Fuzzy; HBPI;
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Times Cited By KSCI : 1  (Citation Analysis)
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