Abstract: In this paper modeling of Photovoltaic array is done using circuit model in matlab.The single diode model is used in this paper. The procedure of finding unknown parameters of Photovoltaic array from data sheet is well explained. The iteration is listed in this paper which may helpful to verify the result with experimental data given by manufacturer data. By using only three points: open circuit, short circuit and maximum power point, the I-V (current voltage) characteristic is plotted. The atmospheric condition and effect of these conditions is clearly shown in I-V (current voltage) as well as P-V (power voltage) characteristics.

Keywords: Open circuit voltage, short circuit current, maximum power point.