Grid integration of solar PV power using shunt connected VSC

In this paper a new reference generation technique to integrate solar photovoltaic (PV) power to the grid is proposed. The power electronics converters are widely use to mitigate the current harmonics, reactive power compensation and to regulate the load voltage. This converter requires a dc link voltage support that can be provided by any of the renewable source of energy like solar, wind etc. which act as a voltage source and also inject the active power generated by the source. It is shown in this paper that the shunt active power filter is used to compensate the reactive power, reduce harmonies in the source current and also injects the active power from the PV source into the grid. The varying nature of power due to change in solar radiation and temperature of injected power can be accounted for with the online computation of the reference power available. The simulation studies are carried out for single-phase application using power system simulator PSCAD/EMTDC 4.2 environment.