A comprehensive method to modeling and simulation of photovoltaic module under natural environment

Conventional simulation methods are usually based on the measured I-V curves under Standard Test condition (STC). Although they can be used to simulate solar yield under specific T and G, they often face difficulties in predicting the characteristics of solar cell under natural environment (NET), with arbitrary T and G). Based on MATLAB software and iterative method, a kind of trial-error method for different natural environment (NET) is proposed. The validation of the model is tested by comparing the simulating and experimental maximum power. The deviation of output of the calculated P_mC from the measured output P_mE under the investigated condition (G=663.1 W/m², T=71°C) turns out to be 1.536%.