Performance Analysis of Voltage-Stateless Controller for Renewable-Energy-Supported Shunt-Active Power Filter

The shunt-active power filter (APF) is one of the most efficient solutions to power-quality issues. The topology has a parallel, connected voltage-source inverter, which offers compensation for current-based disturbances. The effectiveness of compensation is influenced by the control technique employed. Moreover, the controller decides the required quantity of sensors and measurement practices; therefore, it decides related costs. This study uses a second-order generalized integrator (SOGI) to extract the reference current of shunt APF. The proposed strategy uses only measuring of the converter and load currents, thereby does not require voltage measurement and sensors. The proposed topology uses the photovoltaic (PV) energy with an energy-storage unit to generally meet the active power requirement of the utility grid and provides the sustainable compensation of current disturbances and voltage interruption of the three-phase distribution system. The PV-supported shunt APF, tested with different types of loads, can evaluate the performance of the system under steady-state and dynamic conditions. To confirm the efficiency of the proposed controller for PV-supported shunt APF, the simulation and experimental results are presented.