Improved Laplacian Kernel Filter based Control of Multifunctional PV System with Enhanced Power Quality

This paper proposes an improved Laplacian Kernel filter based control of a grid-connected photovoltaic (PV) system. This algorithm improves the power quality by mitigating harmonics distortion, provides power factor correction and also enables injection of maximum power from the PV array to the utility. The system under study, uses a PV array, a boost converter for maximum power point tracking and a voltage source converter (VSC) for connecting the PV boost converter to the grid. The proposed control algorithm is tested by varying irradiance, and under load disturbances. The performance of the control is found satisfactory under test conditions and the obtained total harmonic distortion of grid current satisfies the criteria set by the IEEE 519 standard.