A simplified and accurate photovoltaic module parameters extraction approach using matlab

Abstract

This paper presents a novel approach to extract accurately the photovoltaic (PV) module single-diode model five parameters I <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">ph</sub> , I <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">sat</sub> , A, R <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">s</sub> , and R <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">p</sub> . The parameters extraction method incorporated a new equation dP/dI=0 at the maximum power point replacing the typically used equation in the literature dI/dV=-1/R <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">p</sub> . The new equation avoids the dependence on the value of R <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">p</sub> , and it also does not require any complex calculation and tedious combination of other equations to extract the five parameters for a PV module. The PV module behavior at different temperature and irradiance is also forecasted.