Proceedings of the KIPE Conference (전력전자학회:학술대회논문집)

The Korean Institute of Power Electronics (전력전자학회)
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A Study on DVR Control for Unbalanced Voltage Compensation

  • Jung Hong-Ju (R&D Institute, Industrial Performance Group, Hyosung Corporation) ;
  • Suh In-Young (R&D Institute, Industrial Performance Group, Hyosung Corporation) ;
  • Kim Byung-Seob (R&D Institute, Industrial Performance Group, Hyosung Corporation) ;
  • Kim Rae-Young (R&D Institute, Industrial Performance Group, Hyosung Corporation) ;
  • Choi See-Young (R&D Institute, Industrial Performance Group, Hyosung Corporation)
  • Published : 2001.10.01
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Abstract

This paper presents a new control scheme for a DVR (Dynamic Voltage Restorer) system consisting of series voltage source PWM converters. To control the negative sequence components of the source, it is necessary to detect the negative sequence components. Generally, a filtering process is used which has some undesirable effects. This paper suggests a new method for separating positive and negative sequences components. This control system is designed using differential controllers and digital filters. The positive and negative sequences are extracted and controlled individually. The performance of the presented controller and scheme are confirmed through simulation and actual experiment with a 2.5kVA prototype DVR system.

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