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Article
Operation and Control of a DVR in the Presence of Interharmonics
International Journal of Emerging Electric Power Systems (2008)
  • Amit Kumar Jindal, University of Manitoba
  • Arindam Ghosh, Queensland University of Technology
  • Avinash Joshi
Abstract

The paper discusses the operating principles and control characteristics of a dynamic voltage restorer (DVR). It is assumed that the source voltages contain interharmonic components in addition to fundamental components. The main aim of the DVR is to produce a set of clean balanced sinusoidal voltages across the load terminals irrespective of unbalance, distortion and voltage sag/swell in the supply voltage. An algorithm has been discussed for extracting fundamental phasor sequence components from the samples of three-phase voltages or current waveforms having integer harmonics and interharmonics. The DVR operation based on extracted components is demonstrated. The switching signal is generated using a deadbeat controller. It has been shown that the DVR is able to compensate these interharmonic components such that the load voltages are perfectly regulated. The DVR operation under deep voltage sag is also discussed. The proposed DVR operation is verified through the computer simulation studies using the MATLAB software package.

Keywords
  • distribution system,
  • DVR,
  • fundamental frequency,
  • interharmonics,
  • voltage sag,
  • voltage source inverter
Publication Date
March 14, 2008
Citation Information
Amit Kumar Jindal, Arindam Ghosh and Avinash Joshi. "Operation and Control of a DVR in the Presence of Interharmonics" International Journal of Emerging Electric Power Systems Vol. 9 Iss. 1 (2008)
Available at: http://works.bepress.com/amitjindal/1/