Eletrônica de Potência (Jul 2006)

A Low Power Voltage Sag Compensator

  • Fernando O. Martinz,
  • Mauricio Galassi,
  • Antonio R. Giaretta,
  • Marco A. Oliveira,
  • Fabiana A.T. Silva,
  • Mario Masuda,
  • Simão Copeliovitch,
  • Eric R. Zanetti,
  • Eduardo G. Lima,
  • Josué Camargo,
  • Se Un Ahn,
  • Lourenço Matakas Jr.,
  • Wilson Komatsu,
  • José A. Jardini

DOI
https://doi.org/10.18618/REP.2006.2.077084
Journal volume & issue
Vol. 11, no. 2
pp. 77 – 84

Abstract

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The increasing use of voltage variation sensitive loads in industrial applications nowadays has brought a real concern about interruption costs and damages in complex production lines. This paper presents a power-electronic–based device which compensates voltage sags, restoring the load voltage to acceptable values through a series connected injection transformer. The ratings and power requirements of a low-power voltage sag compensator, also known as Dynamic Voltage Restorer (DVR) are derived, as well as its deadbeat control algorithm implemented in a Digital Signal Processor (DSP). Finally, simulation and experimental results of a 5-kVA prototype are presented.

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