Fuzzy Logic Based MPPT for Grid Connected PV Systems

Abstract

The ever growing demand of power for socio-economic development, the conventional energy
sources have almost become obsolete for nurturing this demand, thus opening new avenues to
harness power from the non-conventional sources effectively and efficiently. Photovoltaic is
one of the prospective solutions for this crisis. But, the efficiency is dependent on
continuously varying various factors such as irradiance, cell temperature, dust, sunlight's
spectral density. Photovoltaic is a non-conventional and environment friendly technique
which has various challenges to overcome. Since the cost of installation systems is more,
tapping maximum energy from an installed system is a technical and economical challenge.
Fuzzy Logic is found to be one suitable method to implement an MPPT system for a
photovoltaic source compared to other conventional MPPT algorithms like hill climbing,
incremental conductance and perturbation and observation. Here the paper presents a
modeling and simulation of fuzzy logic control based MPPT for grid connected photovoltaic
system using boost converter which enhance the efficiency and robustness of the solar
photovoltaic (PV) power generation.