EPE Journal · 2018 · 14 citations · 8 references
EngineeringElectrical EngineeringPower ElectronicsRenewable Energy IntegrationRenewable Energy SystemsPower Electronics For Renewable EnergyRenewable EnergyRenewable Energy Power ConversionSolar Energy SystemsSolar Photovoltaic SystemsSolar RadiationDc-dc Converter ControlMaximum Power Point TrackingMaximum Power Point Tracking AlgorithmsPhotovoltaic System SimulationPhotovoltaic SystemsPrecisionSimulink ModelsSolar Photovoltaic Power Systems
The non-linearity of photovoltaic systems and the change in maximum power point with a level of insolation and temperature complicates the tracking of the maximum power point. Several maximum power point tracker methods have been proposed and implemented in literature. The paper studies a modified perturb and observe (P&O) approach for a photovoltaic system in order to extract the maximum power point with more precision, fast speed and avoid the problems caused by the classic P&O method under the change of climatic conditions. This work is tested with a resistive load powered by a photovoltaic generator via a DC/DC converter. These methods are implemented with STM32F4 microcontroller running environment MATLAB/SIMULINK, using a computer incorporating a card DS1104 for visualization. The simulations and experimental results show that the proposed algorithm offers a fast response with smaller stationary oscillations compared to conventional methods.
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