Journal of Power Electronics

  • 제13권2호
  • /
  • Pages.304-312
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  • 2013
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  • 1598-2092(pISSN)
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  • 2093-4718(eISSN)
전력전자학회 (The Korean Institute of Power Electronics)
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Implementation of a Non-Linear Adaptive Filter Based Sag Detection Method for Dynamic Voltage Restorers under Unbalanced Fault Conditions

  • Cuma, M. Ugras (Dept. of Electrical and Electronics Engineering, Cukurova University) ;
  • Teke, Ahmet (Dept. of Electrical and Electronics Engineering, Cukurova University) ;
  • Meral, M. Emin (Dept. of Electrical and Electronics Engineering, Yuzuncu Yil University) ;
  • Bayindir, K. Cagatay (Dept. of Electrical and Electronics Engineering, Cukurova University) ;
  • Tumay, Mehmet (Dept. of Electrical and Electronics Engineering, Cukurova University)
  • 투고 : 2012.02.11
  • 발행 : 2013.03.20
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초록

The most common power quality problems in distribution systems are related to unbalanced voltage sags. Voltage sags must be detected quickly and corrected in a minimum amount of time. One of the most widely used methods for sag detection is based on the d-q transformation. This method has the disadvantage of missing the detection of unbalanced faults, because this method uses a voltage sag level signal obtained from the average of 3 phases for sag detection. In this paper, an adaptive filter sag detection method is proposed for Dynamic Voltage Restorers (DVR) under unbalanced fault conditions. The proposed DVR controller is able to detect balanced, unbalanced and single phase voltage sags. A novel reference voltage generation method is also presented. To validate the proposed control methods, a 3-phase DSP controlling a DVR prototype with a power rating of 1.5-kVA has been developed. Finally, experimental results are presented to verify the performance of the proposed control methods.

키워드

참고문헌

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피인용 문헌

  1. Performance analysis of multiconverter unified power quality conditioner with an EPLL-based controller at medium voltage level vol.26, pp.12, 2016, https://doi.org/10.1002/etep.2306
  2. Fast and precise voltage sag detection method for dynamic voltage restorer (DVR) application vol.130, 2016, https://doi.org/10.1016/j.epsr.2015.08.002