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Published Article / I07/2005/I-018 ENY-ARTICLE-2008-110

Analysis of nonstationary electric signals using the S-transform. Zastosowanie transformaty S do analizy sygnałów niestacjonarnych w elektrotechnice

Leonowicz, Z (Politechnika Wrocławska) ; Lobos, T (Politechnika Wrocławska) ; Wozniak, K (Politechnika Wrocławska)


Abstract: Contemporary power systems, which contain a considerable number of non-linear loads, require advanced methods of spectral analysis for their investigation and control. Fourier-based spectral methods are useful in stationary signal analysis but is insufficient in the case of numerous real-life problems when signal contents changes in time. Nonstationary signals are usually analysed with STFT (Short-Time Fourier Transform). The method presented in this paper employs recently introduced S-transform which is an important development of STFT.

Keyword(s): S-transform ; transformata S ; nonstationary signals ; electric power systems ; power quality ; jakość energii
Note: XXVIII Międzynarodowa Konferencja z Podstaw Elektrotechniki i Teorii Obwodów. IC-SPETO 2005, Gliwice-Ustroń, 11-14.05.2005. T. 2. pp. 379-382

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Record created 2008-03-23, last modified 2008-03-23

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