Simulink modelling of LV photovoltaic grid-connected distributed generation

This paper deals with the study the effects of photovoltaic (PV) distributed generation on distribution networks. It deals with the development of PV units models for suitable large scale systems for both steady state and transient analysis. The basic PLL concept and design criteria for grid-connected PV applications are discussed. Modeling of the current reference generator of single-phase inverters based on the PLL technique is dealt with. The models have been developed by means of Simulink.