Design of Active Power Controller of a BESS in AC Microgrids

Active power control of a battery energy storage system (BESS) in ac microgrids is presented in this paper. PI controller design is also proposed. The simulation model using PSIM 9.0 is used to validate the designed controller. Actual data collected from data acquisition system in ac microgrids is used to validate the designed controller including photovoltaic (PV) generation profile, wind generation profile and demand load profile. All actual profiles are recorded from a real microgrid application. A BESS controller is validated into two scenarios. First, a BESS operates with PV generation and demand load. Second, a BESS operates with PV generation, wind generation and demand load. The simulation results suggest that the designed PI controller can perform active power compensation in the ac microgrid satisfactorily.