Analysis of Solar PV Array Integration with DC-DC Converter and Battery-Integrated UPQC for Microgrid Power Quality Enhancement

PV (Photovoltaic) fed UPQC (Unified Power Quality Conditioner) systems are innovative solutions for improving Power Quality (PQ) in microgrids that incorporate solar PV arrays. These systems combine the advantages of solar power generation with the power conditioning capabilities of UPQC technology to enhance the overall efficiency and reliability of microgrids. Super-Lift Luo Converter, which significantly contributes to optimizing the utilization of solar power and improving the power quality of the microgrid, is implemented in this work. By integrating the converter into UPQC, the PV system actively compensates for PQ issues in the microgrid. The Type-2 Fuzzy Logic Controller (T2 FLC) based MPPT (Maximum Power Point Tracking) control mechanism helps regulate the output voltage and assures a constant and high-quality power supply to the loads. Additionally, battery storage allows for the capture and storage of excess energy generated by PV arrays during periods of high solar irradiation. This stored energy is used in periods of low solar generation or high load demand, effectively balancing the energy supply and demand. Furthermore, the current harmonics are eliminated using the PI controller-assisted DQ theory. The entire proposed system is verified using the MATLAB platform.