Power Quality Enhancement in Micro grid System Using PV Based UPQC

Providing high-quality, reliable, and continuous power to consumers is crucial in today’s power systems. However, the increasing demand and widespread use of power electronic devices have introduced various power quality issues, including voltage sags, swells, and harmonics. To mitigate these issues, advanced power electronic devices have been employed. This project focuses on utilizing a Unified Power Quality Conditioner (UPQC) integrated with a solar PV array to maintain optimal power quality. The UPQC combines series and shunt compensators, enabling it to perform multiple tasks and improve power quality. The series converter addresses grid-side power quality problems, such as voltage sags and swells, while regulating the load voltage and PCC voltage. Meanwhile, the shunt compensator mitigates current harmonics caused by nonlinear loads, leveraging power from the PV array. A synchronous reference frame control strategy based on a moving average filter generates the reference signal. The UPQC model is developed and simulated using MATLAB/SIMULINK software to evaluate its performance.