Harmonic Compensation Analysis of Grid-Connected System Having Photovoltaic and Energy Storage Integrated with Parallel Active Filter

The growing popularity of non-linear loads and distributed generation can create power quality problems in the grid system. In order to ensure stable system operation, the question of how to improve the power quality is unavoidable. In this paper, a PV energy storage integrated parallel active filter is analyzed to compensate for grid current harmonics in the presence of grid current contamination by nonlinear loads. The maximum power point tracking (MPPT) algorithm of PV and the method of coordinating with the power output of the storage battery are investigated. The integration of power quality improvement and clean energy is achieved. Finally, the system is simulated in MATLAB/SIMULINK to verify the feasibility of the system.