1.
| Zaawansowane metody analizy widmowej sygnałów elektrycznych
/ Leonowicz, Z
[ENY-THESIS-2008-001]
I argue in my dissertation that the use of modern high-resolution spectrum estimation methods, such as Min-Norm, Wigner-Ville distribution and combination of these with higher-order statistics (cumulants), provide more possibilities of analysis of highly distorted electrical signals than known methods of spectrum estimation based on Fourier transform. [...]
http://zet10.ipee.pwr.wroc.pl/record/6/files/
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2.
| Analysis of Non-Stationary Signals in Power Systems using Wigner Transform and Min-Norm Method
/ Leonowicz, Z
[ENY-PREPRINT-2008-005]
Time-varying spectra of non-stationary time-series commonly used are spectrograms from the Short-Time Fourier Transform (STFT). [...]
http://zet10.ipee.pwr.wroc.pl/record/88/files/
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3.
| Analysis of non-stationary signals in power systems
/ Leonowicz, Z
[ENY-ARTICLE-2008-002]
Classical techniques to estimate the spectrum of the multi-component signal are based on Fourier-based transformations. [...]
http://zet10.ipee.pwr.wroc.pl/record/2/files/
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4.
| Teoria Obwodów 2
/ Sikorski, T ; Ruczewski, P
[ENY-TEACHING-2011-038]
Zawartość tematyczna wykładu Stany nieustalone (przejściowe) w obwodach elektrycznych – metoda klasyczna Warunki początkowe w obwodach elektrycznych. [...]
http://zet10.ipee.pwr.wroc.pl/record/377/files/
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5.
| Analysis of Three Phase Signal using Wigner Spectrum
/ Leonowicz, Z ; Lobos, T
[ENY-ARTICLE-2008-032]
New method of observation and diagnosis of inverter-fed induction motor drives is developed and tested. [...]
http://zet10.ipee.pwr.wroc.pl/record/39/files/
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6.
| Modern spectral analysis of non-stationary signals in electrical power systems
/ Leonowicz, Z ; Lobos, T ; Schegner, P
[RZ I07/2002/I-048]
[ENY-ARTICLE-2009-251]
A novel approach to harmonic and interharmonic analysis, based on the “subspace” methods, is proposed. [...]
http://zet10.ipee.pwr.wroc.pl/record/312/files/
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7.
| Application of higher-order spectra for signal processing in electrical power engineering
/ Leonowicz, Z ; Lobos, T ; Ruczewski, P ; Szymanda, J
[I07/1997/I-317]
[ENY-ARTICLE-2008-108]
During recent years higher order statistics (HOS) have found a wide applicability in many diverse fields, e. [...]
http://zet10.ipee.pwr.wroc.pl/record/137/files/
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8.
| Spectrum estimation of non- stationary signals in power systems
/ Leonowicz, Z ; Lobos, T ; Rezmer, J
[ENY-ARTICLE-2008-038]
Time-varying spectra of non-stationary time-series commonly used are spectrograms from the Short-Time Fourier Transform (STFT). [...]
http://zet10.ipee.pwr.wroc.pl/record/46/files/
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9.
| Analyse nicht stationärer Signale in Energiesystemen
/ Janik, P ; Leonowicz, Z ; Schegner, P
[I07/01/I-073]
[ENY-ARTICLE-2008-051]
Klassische Methoden der Spektralanalyse von diskret abgetasteten Signalen mit vielen spektralen Anteilen basieren meistens auf der Fourier-Transformation. [...]
http://zet10.ipee.pwr.wroc.pl/record/60/files/
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10.
| Application of higher-order spectra for signal processing in electrical power engineering
/ Lobos, T ; Leonowicz, Z ; Szymanda, J ; Ruczewski, P
[ENY-ARTICLE-2008-004]
In power spectrum estimation, the signal under consideration is processed in such a way, that the distribution of power among its frequency is estimated and phase relations between the frequency components are suppressed. [...]
http://zet10.ipee.pwr.wroc.pl/record/4/files/
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