Simulation and Implementation of single phase, single stage, grid connected photovoltaic system

Abstract

This work describes the single-phase, single-stage, Grid-Connected Photovoltaic System (GCPV) using Hysteresis Current Control Inverter. The complete Matlab/Simulink simulation and hardware implementation of the system are perform.To achieve reliable and efficient power generation from photovoltaic systems; perturb and observe (P&O) maximum power point tracking (MPPT) method has been used. The latter maximizes the power from the PV system under various lighting conditions. A four-MOSFET bridge inverter that takes DC power supplied by a solar panel and transforms it into a 220 volt AC power source. A Hysteresis current controller has been employed to adjust the inverter’s frequency according to the grid frequency. As compared to other control methods, the proposed solution provides robust current regulation, achieves unity power factor, low total harmonic distortion (THD) and maximizes the PV power extracted from the PV generator. Simulation and experimental results are provided and commented to demonstrate the effectiveness of the design.