Design and simulation of Perturb and Observe Maximum Power Point Tracking using MATLAB/Simulink

This paper presents design and simulation of Perturb and Observe (PO) algorithm of Maximum Power Point Tracking (MPPT) for Photo voltaic system. The characteristics of a solar cell are dependent on the environmental parameters like sun light and temperature and are non linear in nature. It´s power changes non linearly with respect to the voltage and current. Hence there is only one voltage and current at which Maximum Power Point (MPP) exists for certain climate conditions. MPPT serves the purpose of tracking the MPP. The step by step procedure of solar panel modelling, designing of DC-DC boost converter and PO MPPT is given. The solar panel and PO MPPT is simulated under different environmental conditions. The simulation results are discussed.