Repozytorium Eny Politechnika Wrocławska

Repozytorium W. Elektrycznego Politechniki Wrocławskiej Znaleziono 16 rekordów  1 - 10następny  skocz do rekordu: Szukanie trwało 0.00 sekund. 
Analysis of traction system time-varying signals using ESPRIT subspace spectrum estimation method / Leonowicz, Z ; Lobos, T [I07/2006/I-090] [ENY-ARTICLE-2008-190]
Auxiliary static converters in transportation power systems generate not only characteristic harmonics but also non characteristic harmonics and interharmonics. [...]
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Spectrum estimation of non-stationary signals in traction systems / Bracale, A ; Carpinelli, G ; Leonowicz, Z ; Lobos, T ; et al [RZ I07/04/I-071] [ENY-ARTICLE-2008-013]
The growing complexity of the AC and DC traction systems in terms of both new technologies and automation requires a careful control of the Power Quality disturbances. [...]
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On some spectrum estimation methods for analysis of non-stationary signals in power systems. Pt. 1. Theoretical Aspects. & Pt. 2. Numerical Applications / Bracale, A ; Carpinelli, G ; Lauria, D ; Leonowicz, Z ; et al [RZ I07/04/I-045RZ I07/04/I-046] [ENY-ARTICLE-2008-012]
Part I Frequency power converters and arc furnaces generate a wide spectrum of harmonic components and interharmonics. [...]
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Parametric methods for time-frequency analysis of electric signals / Leonowicz, Z [ISSN 0324-945x] [ENY-BOOK-2008-001]
The author presents a new approach to spectral analysis of electric signals and related problems encountered in power systems. [...]
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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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Evaluation of compensation devices of DC arc furnaces using advanced spectrum estimation methods / Bracale, A ; Carpinelli, G ; Lobos, T ; Leonowicz, Z ; et al [RZ I07/05/I-026] [ENY-ARTICLE-2008-011]
Spectral representation of waveform distor-tions has been of great interest in power systems for many years since the disturbing loads generate a wide spectrum of components which deteriorate the quality of power supply. [...]
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Power Quality in Wind Power Systems / Leonowicz, Z [ENY-ARTICLE-2009-268]
Wind power generation systems influence power quality in a specific way making important the need for detailed and accurate evaluation of disturbances caused by wind generators. [...]
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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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Parametric Spectral Estimation for Power Quality Assessment / Leonowicz, Z ; Lobos, T [1-4244-0813-X/07/$20.00 2007 IEEE] [ENY-ARTICLE-2008-025]
The authors show that the use of highresolution spectrum estimation methods instead of Fourier-based techniques can improve the accuracy of measurement of spectral parameters of distorted waveforms encountered in power systems, in particular the estimation of the power quality indices (such as harmonic and interharmonic groups and subgroups). [...]
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Time-frequency analysis of non-stationary signals in power systems / Lobos, T ; Rezmer, J ; Sikorski, T ; Schegner, P [RZ I07/04/I-008] [ENY-ARTICLE-2008-014]
Representation of signals in time and frequency domain has been of interest in signal processing areas for many years, especially taking in the limelight time-varying non-stationary signals. [...]
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