Review on Unified Power Quality Conditioner (UPQC) to mitigate power quality problems

Abstract

For the normal working of the electrical apparatus customers want an uninterrupted flow of sinusoidal voltage and current of continual magnitude and frequency at the AC mains. Although the generated voltage at power plants is almost sinusoidal but our current power system has wide range of electrical apparatus some of which are non-linear in nature which causes complications in the power supply. Also, few other unavoidable conditions like lightning strike and faults also induces power quality complications. Various FACTS devices are utilized to eliminate any power quality concerns in current and voltage signals. One of these numerous devices is the unified power quality conditioner (UPQC), and this paper provides a literature overview on the subject.