Electrical Engineering Wroclaw University of Technology

Electrical Engineering Wroclaw University of Technology 13 records found  1 - 10next  jump to record: Search took 0.01 seconds. 
Detection of the Fundamental Harmonic of Distorted Signals using Min-Norm Method / Lobos, T ; Leonowicz, Z ; Piotrowicz, J [ENY-ARTICLE-2008-030]
Spectrum analysis is a fundamental tool for diagnostic purposes widely used in monitoring and diagnostic systems. [...]
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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). [...]
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Zastosowanie programu Matlab wraz z analizatorem SigLab w badaniach laboratoryjnych filtrów analogowych / Bachry, A ; Piotrowicz, J ; Stec, C [ENY-ARTICLE-2008-019]
W opracowaniu przedstawiono możliwość wykorzystania pakietu SigLab do bezpośredniego wyznaczania charakterystyk filtrów analogowych. [...]
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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. [...]
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Advanced Spectrum Estimation Methods for Signal Analysis in Power Electronics / Leonowicz, Z ; Lobos, T ; Rezmer, J [ENY-ARTICLE-2008-003]
Modern frequency power converters generate a wide spectrum of harmonics components. [...]
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Effect of Voltage Harmonics Content on Arrester Diagnostic Result / Jaroszewski, M ; Kostyla, P ; Wieczorek, K [ENY-ARTICLE-2008-180]
Diagnoses of HV arresters are usually based on an analysis of total leakage current harmonics. [...]
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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. [...]
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High resolution spectrum-estimation methods for signal analysis in power systems. / Lobos, T ; Leonowicz, Z ; Rezmer, J ; Schegner, P [AZ I07/06/I-006] [ENY-ARTICLE-2008-008]
The spectrum-estimation methods based on the Fourier transform suffer from the major problem of resolution. [...]
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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. [...]
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Analysis of Mathematical Modeling of PV Module with MPPT Algorithm / Chitti Babu, B ; Cermak, T ; Gurjar, S ; Leonowicz, Z ; et al [ENY-ARTICLE-2015-364]
This paper presents the mathematical modeling of photovoltaic (PV) module with the effective comparison of two popular maximum power point tracking (MPPT) techniques; Generally, Maximum Power Point Tracking (MPPT) techniques are used in PV System to extract maximum possible power which in turn depends on solar irradiance and temperature of PV module. [...]
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