UPQC-S: A novel concept of simultaneous voltage sag/swell and load reactive power compensations utilizing series inverter of UPQC

Vinod Khadkikar, Ambrish Chandra

Research output: Contribution to journalArticlepeer-review

227 Scopus citations

Abstract

This paper introduces a new concept of optimal utilization of a unified power quality conditioner (UPQC). The series inverter of UPQC is controlled to perform simultaneous 1) voltage sag/swell compensation and 2) load reactive power sharing with the shunt inverter. The active power control approach is used to compensate voltage sag/swell and is integrated with theory of power angle control (PAC) of UPQC to coordinate the load reactive power between the two inverters. Since the series inverter simultaneously delivers active and reactive powers, this concept is named as UPQC-S (S for complex power). A detailed mathematical analysis, to extend the PAC approach for UPQC-S, is presented in this paper. MATLAB/SIMULINK-based simulation results are discussed to support the developed concept. Finally, the proposed concept is validated with a digital signal processor-based experimental study.

Original languageBritish English
Article number5688329
Pages (from-to)2414-2425
Number of pages12
JournalIEEE Transactions on Power Electronics
Volume26
Issue number9
DOIs
StatePublished - 2011

Keywords

  • Active power filter (APF)
  • power angle control (PAC)
  • power quality
  • reactive power compensation
  • unified power quality conditioner (UPQC)
  • voltage sag and swell compensation

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