Simulation and analysis of perturb and observe mpp tracking algorithm under uniform and non-uniform irradiation

Abstract

The PV array generating power is always directly affected by various conditions such as angle of inclination, temperature, irradiation of sun, shading effect, and solar array configuration. In practice, PV arrays are commonly partially shaded by trees, clouds, nearby buildings, bird droppings and other utilities which leads to multiple peaks appear in the P-V curve, a global maximum and one or several local peaks. In this paper, the "perturb and observe" (P&O) maximum power point tracking (MPPT) algorithm employed for tracking the maximum power point under uniform and non-uniform irradiation conditions. Initially, this paper presents the P and O algorithm operation, later the boost converter performance details and finally the combination of a boost converter with P and O algorithm. The evaluation process has been carried systematically for the uniform and non-uniform solar irradiance and finally, the results are analyzed.