A Control Algorithm Design for 45kVA UPQC Prototype

45kVA UPQC 제어 알고리즘 설계

  • 전진홍 (한국전기연구원 전력연구단) ;
  • 김태진 (한국전기연구원 산업전기연구단) ;
  • 류홍제 (한국전기연구원 산업전기연구단) ;
  • 안종보 (한국전기연구원 전력연구단)
  • Published : 2005.07.18


In recent years, customers and power supplies are interested in power quality. Demands of customers are change from standard quality of distribution power system to various high quality of distribution power system. so, it is necessary to apply power quality compensator. in our project, we develop the UPQC(Unfied Power Quality Compensator of 45kVA which compensates power factor and voltage sag, interruption. it is very frequently occurred power quality problems. As a series and shunt compensator, UPQC consists of two inverters with common dc link capacitor bank. It compensates the current quality in the shunt part and the voltage quality in the series part. In this paper, we present simulation and test result of developed UPQC system. Test for UPQC are performed at voltage sag, flickers and non-linear load conditions. For voltage sag and ficker generation, we use RTDS(Real Time Digital Simulator) and power amplifier system.