An integrated system for active filter and photovoltaic energy conversion

This paper focuses on the implementation of a three-phase four wire current-controlled voltage source inverter (CC-VSI) as both power quality improvement and PV energy extraction. For power quality improvement, the CC-VSI works as a grid current-controller shunt active power filter. Then, the PV array supported by the hill climbing type of a MPPT controller is coupled to the DC bus of the CC-VSI. The output of MPPT controller is a DC voltage that determines the DC-bus voltage according to the PV maximum power. The system has been tested using computer simulation.