Comparative Study of Three Phase Grid Connected Photovoltaic System Using PI, PR and Fuzzy Logic PI Controller with Harmonic Analysis

This paper presents a three phase grid connected photovoltaic system with a comparison between three different control strategies; the conventional PI controller, the proportional resonant (PR) controller and the Fuzzy Proportional Integral controller. The Maximum Power Point Technique (MPPT) called Perturb and Observe is used for tracking the maximum from the PV panel. The three phase inverter is controlled by the Pulse Width Modulation (PWM) technique. PI, PR and Fuzzy logic controller are used as a current controller for regulating the current and finally a comparison of Total Harmonic Distortion (THD) is made between the different types of controllers. In order to examine the effectiveness of the suggested control, a simulation using the Matlab/Simulink software has been done and the simulation results show the effectiveness and the good performances of the proposed designed system especially with variation load which ensure a better energy transport to grid with fewer harmonics.