Unified Power Quality Conditioner: A Literature Survey

Widespread applIcatIons of power electronic based loads In Industry have Increased the Importance and application of power quality studies. Decrease In the cost of power electrome devices, fast switching characteristics of converters and Improvements In the efficiency of both power converters and energy storage components have Increased the applicability of new technological solutions such as Custom Power (CP) and Flemble AC Transmission Systems (FACTS) Devices. Unified Power Quality Conditioner (UPQC, a combination of series and shunt power filters) Is one of the CP devIces and compensates voltage and current qualltij problems. UPQC has become very popular In recent years both In low voltage and medium voltage applIcatIons. In this study, a comprehensive review on circuit topologies and control algorithms of UPQC studles Is presented. The drawbacks and advantages of each presented techniques are also presented. The study also helps the researchers to select the optimum control strategies and power utrcult configuration for UPQC applIcatIons.