Comparison of Gabor-Wigner Transform and SPWVD as tools of harmonic computation.

Authors

  • M. Szmajda Author
  • J. Mroczka Author

DOI:

https://doi.org/10.24084/repqj09.343

Abstract

The measurement algorithms applied in power quality measurement systems are based on Fast Fourier Transformation. That one-dimension frequency analysis is sufficient in many cases. However, to illustrate the character of the signal in a more comprehensive manner, it is crucial to represent the investigated signal on time-frequency plane. There are a lot of time-frequency representations (TFR) for presenting measured signal. The TFR: Short-Time Fourier Transformation (STFT), Smoothed Pseudo Wigner-Ville Distribution (SPWVD) and Gabor-Wigner Transform (GWT) are described in the paper. The ability of implementation of mentioned methods in harmonics computation according to the power quality standards were presented in the paper.

Author Biographies

  • M. Szmajda

    Faculty of Electrical Engineering, Automatic Control and Informatics

    Opole University of Technology

    Ul. Sosnkowskiego 31, 45-272 Opole (Poland)

    Phone/Fax number: +0048 77 4006238, e-mail: m.szmajda@po.opole.pl

  • J. Mroczka

    Faculty of Electronics

    Wrocław University of Technology

    1. B. Prusa 53/55, 50-317 Wrocław (Poland)

    Phone/Fax number: +0048 71 3206232, e-mail: janusz.mroczka@pwr.wroc.pl

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Published

2024-01-17

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Section

Articles