D. Dusabe, J.L. Munda, and A.A. Jimoh (South Africa)
Off-grid Photovoltaic Systems, Solar Cells, Maximum Power Point, Modelling, Simulation
A new model for current-voltage characteristics and maximum power operation of a photovoltaic (PV) module is presented which aims to model the effect on I-V and P V curves of varying climatic conditions. This model has been implemented using the Matlab/Simulink program and is used to investigate the effect of meteorological conditions on the performance of a PV module generator. In order to validate the developed simulation model, simulated results from the model under standard condition are compared with specifications given by the manufacturer. There is a very good agreement between the results. In addition, it is shown that the maximum power available at low temperatures is higher than that at higher temperatures, and the maximum power is directly proportional to irradiance. Afterwards, a PV array model is derived. The benefit of improved curve fitting parameter is investigated as well.
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