Enhancement of Power Quality using Solar Photovoltaic System with Universal Active Filtering and Fuzzy Logic Controller Capabilities

Abstract

This work proposes a novel technique for controlling the universal active power filter integrated with PV array system (UAPF-PV), which is based on a second-order sequence filter and a proportional resonant controller. The active component of the distorted load current is estimated using a second order sequence filter, The Fuzzy Logic Controller is used to estimate the loss component and this information is then used to provide a reference signal for a shunt active filter at the instant of zero crossing of the load voltage. With fewer mathematical calculations, the suggested method extracts the essential active component of distorted and unbalanced load currents with good accuracy. In addition to enhancing power quality, the system produces clean energy through the PV array system that is built into its DC-bus. The benefits of distributed generation and power quality improvement are combined in the UAPF-PV system. MATLAB/Simulink is used to assess the system performance under a range of disturbance scenarios, including changes in solar irradiation, load unbalancing, and PCC voltage rise and fall.