Repozytorium Eny Politechnika Wrocławska

Repozytorium W. Elektrycznego Politechniki Wrocławskiej Znaleziono 16 rekordów  1 - 10następny  skocz do rekordu: Szukanie trwało 0.00 sekund. 
1.
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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2.
Time-frequency analysis of non-stationary three phase signals / Leonowicz, Z ; Lobos, T [ENY-ARTICLE-2008-028]
New method of observation and diagnosis of inverter-fed induction motor drives is developed and tested. [...]
http://zet10.ipee.pwr.wroc.pl/record/35/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.
Time-Frequency Analysis of Complex Space-Phasor in Power Electronics / Leonowicz, Z ; Lobos, T ; Sikorski, T [doi:10.1109/TIM.2007.908250] [ENY-ARTICLE-2008-043]
This paper considers applying nonparametric and parametric methods for the calculation of the time–frequency representation of nonstationary signals in power electronics. [...]
http://zet10.ipee.pwr.wroc.pl/record/52/files/
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5.
Time-Frequency Representation for Non-Stationary Phenomena in Electrical Engineering / Sikorski, T ; Ruczewski, P ; Lobos, T [I07/2004/I-018] [ENY-ARTICLE-2008-118]
The paper introduces two-dimensional method of observation and diagnosis of non-stationary signals in electrical engineering. [...]
http://zet10.ipee.pwr.wroc.pl/record/153/files/
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6.
Analysis of power quality disturbances using the S-Transform / Leonowicz, Z ; Lobos, T ; Wozniak, K [I07/2007/I-009] [ENY-ARTICLE-2008-111]
The method presented in this paper employs recently introduced S-transform which is an important development of STFT with improved properties. [...]
http://zet10.ipee.pwr.wroc.pl/record/140/files/
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7.
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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8.
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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9.
Real-Time Parameter Estimation of Signals in Converter Fed Drives using Adaptive Neural Networks / Lobos, T ; Koglin, H J ; Waclawek, Z [ENY-ARTICLE-2008-031]
Frequency converter-fed induction motor drives were simulated using the EMTP-ATP (Electromagnetic Transients Program - Alternative Transients Program) The aim of the simulation investigations is to develop a feasible method for drive visualisation and for diagnosis of different unsymmetrical operations. [...]
http://zet10.ipee.pwr.wroc.pl/record/38/files/
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10.
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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