An analytical-numerical approach in the calculation of photovoltaic module parameters operating under partial shaded conditions

Abstract

The aim of this work is to determine the parameters and characteristics of a PV module in case of partial shading conditions. Both numerical and analytical methods are used in order to attain this objective. The iterative method namely Newton-Raphson is used to evaluate the characteristics of the PV module under partial shading conditions at its peak point. For various shading conditions, the lost power by the module is evaluated in order to show the influence of the partial shading conditions. The combined analytic method with the iterative method used allowed fairly accurate results on the behaviour of the shaded PV modules with less difficulties compared to the analytical method alone.