Fuzzy Logic Based Maximum Power Point Tracking Design

Need of renewable sources is increasing multifold day by day. The most abundant renewable source that is available in the environment is solar energy. Solar energy has to be converted into electrical energy for daily use. This can be achieved by using photovoltaic (PV) system. But the efficiency of a PV system is very less since it is characterized by many parameters like irradiance, temperature, latitude, rainfall, humidity and mechanical load. Since the efficiency is low, it is necessary to operate on maximum power from the solar cells using maximum power point tracking (MPPT). There are numerous proposed ways for tracking the maximum power point, with the Perturb and Observe(P&O) method being the most extensively used and competitive with other MPPT methods. This paper explains about designing a standalone PV system in partial shading conditions and implementation of fuzzy logic based solar PV system. This study and observation are carried out in MATLAB Simulink model and the performance of the system is analyzed.