Development of Distributed Photovoltaic Grid-Connected Simulation System Based on StarSim Platform

Based on the StarSim platform, this paper designs and develops a complete photovoltaic grid-connected simulation visualization system for the research and training of photovoltaic system operation and grid connection. In the system, the photovoltaic array uses a model of a controlled current source. Based on mathematical functions in the LabVIEW software environment, a general photovoltaic cell mathematical model is established. The main circuit topology model of the three-phase photovoltaic grid-connected inverter was created using StarSim Editor. The model adopts two-stage structure, and the SPWM modulation algorithm is implemented in the LabVIEW software environment.