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http://dx.doi.org/10.6113/TKPE.2020.25.1.1

Optimum Control Period and Perturbation Voltage for PV-MPPT Controller Considering Real Wether Condition  

Ryu, Danbi (Dept. of Electrical, Electronic and Control Eng., Kongju National University)
Kim, Yong-Jung (Dept. of Electrical, Electronic and Control Eng., Kongju National University)
Kim, Hyosung (Div. of Electrical, Electronic and Control Eng., Kongju National University)
Publication Information
The Transactions of the Korean Institute of Power Electronics / v.25, no.1, 2020 , pp. 1-5 More about this Journal
Abstract
Solar power generation systems require maximum power point tracking (MPPT) control to operate PV panels at their maximum power point (MPP). Most conventional MPPT algorithms are based on the slope-tracking concept. A typical slope-tracking method is the perturb and observe (P&O) algorithm. The P&O algorithm measures the current and voltage of a PV panel to find the operating point of the voltage at which the calculated power is maximized. However, the measurement error of the sensor causes irregularity in the calculation of the generated power and voltage control. This irregularity leads to the problem of not finding the correct MPP operating point. In this work, the power output of a PV panel based on the P&O algorithm is simulated by considering the insolation profiles from typical clear and cloudy weather conditions and the errors of current and voltage sensors. Simulation analysis suggests the optimal control period and perturbation voltage of MPPT to maximize its target efficiency under real weather conditions with sensor tolerance.
Keywords
Solar power generation; Perturb and observe algorithm; MPPT efficiency; MPPT control period; Perturbation voltage;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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