A Matlab/Simulink model of a grid connected single-phase inverter

The massive spread of distributed generation has created problems difficult to solve. Grid connected system models allows to perform simulations to study how these systems interact with the grid. In literature there are no complete model of single phase grid connected systems. The aim of this work is the study and the complete description of a single phase grid connected system in all its part: inverter, unipolar SPWM, inverter control strategy, Phase Locked Loop and filter. The developed model has been tested both numerically and experimentally. The implemented inverter control strategy allows to regulate the active and reactive power flow separately. Therefore, the developed model is able to regulate the voltage of the point of common coupling (PCC) through the reactive power control.