PV Supported Inductive Hybrid UPQC for Power Quality Enhancement in Sensitive Power Supply Networks

This paper aims to design a Photovoltaic (PV) - supported inductive hybrid Unified Power Quality Conditioner (UPQC) system to enhance power quality in the sensitive power supply networks. The system addresses issues like voltage sag, harmonics, and load imbalance while improving energy efficiency. Integrating photovoltaic energy reduces grid dependency and promotes sustainability. The solution ensures a stable and reliable power supply for critical loads. Voltage control, harmonic reduction, and responsiveness to voltage sag are evaluated to quantify the increase in power quality. When compared to the conventional UPQC system, the PV-supported inductive hybrid UPQC system exhibits a noticeably greater power quality improvement. The hybrid UPQC system minimized current harmonic distortion by 2.79% and decreased voltage sags by 40%. With a significance value of roughly 0.0037 at peak performance, the hybrid UPQC system demonstrated its best performance under variable solar irradiation. In this work, it is observed that the PV-supported inductive hybrid UPQC system provides significant improvements in power quality over the traditional UPQC system. The integration of PV technology enhances voltage regulation and reduces harmonic distortion effectively.