Maximum Power Point tracking algorithm based on I–V characteristic of PV array under uniform and non-uniform conditions

Abstract

This paper presents a new algorithm based on characteristic equation of solar cells to determine the Maximum Power Point (MPP) of PV modules under partially shaded conditions (PSC). To achieve this goal, an analytic condition is introduced to determine uniform or non-uniform atmospheric conditions quickly. This paper also proposes an effective and quick response technique to find the MPP of PV array among Global Peak (GP) and local peaks when PSC occurs based on the analytic condition. It also can perform in a manner like conventional MPPT method when the insolation conditions are uniform. In order to verify the accuracy and validity of the proposed method, different simulations are carried out in MATLAB-Simulink environment for various atmospheric conditions.