Fuzzy controlled fly back converter for solar energy system

The paper develops a duty cycle control for the fly back boost converter using fuzzy based MPPT method. The photovoltaic (PV) systems exhibits nonlinear I-V characteristics and the maximum power point varies in accordance with solar radiation or insolation and temperature. The intermediate high frequency switched dc - dc converter increases the efficiency of the system by providing impedance matching between the PV system and the load. The innate nature of fuzzy principles introduces a reasoning theory to facilitate the operation of the PV cell arrays at their maximum power point. The MATLAB based simulation results leave way to realize a regulated output voltage over a range of operating loads and erudite its suitability for use in the practical world.