An Enhancement of Power Quality with Efficient Active Power Transfer Capability in a PV–BSS-Fed UAPF for Microgrid Realization

In this research work, a new control strategy is proposed to extract fast and accurate voltage and current reference signals to operate the system in a desired manner. Here, the extraction of load voltages and calculation of load and reference powers are used to generate the reference signals, thereby comparing with actual signals with hysteresis controller to produce switching pulses of converters. As a result, the shunt and series converters form a robust system by acting as a current-controlled voltage source and voltage-controlled current source, respectively. It eliminates the need for adaptive filters and low-pass filters to extract the fundamental component of the load current. Furthermore, it increases the conversion efficiency of converters and improves the static and dynamic performance of the system.

Index Terms—Active power transfer capability, microgrid, power quality, photovoltaic and battery storage system (PV–BSS), renewable energy sources (RESs), universal active power filter (UAPF).