Grid Connected Photovoltaic System for Power Sharing Application Using MATLAB

摘要

This study presents, a single-phase five-level Photo-Voltaic (PV) inverter topology for grid-connected system. The equivalent model of PV panel is generating the electric power. The photo-voltaic arrays are connected to PWM inverter through the DC-DC boost converter. In this output of boost converter is constant. The inverter output is constant AC with suppl frequency, it is connected to grid. A digital proportional-integral-derivative current control algorithm is implemented in MATLAB version 7.5 to control the inverting operation. The PID current control scheme produces less harmonic distortion and improved sudden step response. The grid current is almost sine wave and the power factor is nearly unity.