Electrical Engineering Wroclaw University of Technology

Electrical Engineering Wroclaw University of Technology 9 records found  Search took 0.01 seconds. 
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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Performance of parametric spectrum estimation methods / Leonowicz, Z [RK I07/2006/I-019] [ENY-ARTICLE-2009-240]
W pracy przedstawiono porównanie dokładności wyznaczania częstotliwości i amplitudy składowych sygnałów harmonicznych odkształconych przy pomocy parametrycznych metod estymacji widma: MUSIC i ESPRIT. [...]
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Time-frequency analysis of non-stationary phenomena in electrical engineering / Bracale, A ; Carpinelli, G ; Wozniak, K ; Sikorski, T ; et al [I07/2006/I-037] [ENY-ARTICLE-2008-191]
This paper serves the idea of applying joint time-frequency representations in electrical engineering. [...]
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Real-time Implementation of Adaptive Amplitude Estimators for Protection and Control Purposes. / Rebizant, W ; Staszewski, J ; Lee, S J ; Kang, S H [I08/2003/I-067] [ENY-ARTICLE-2008-151]
In the paper a new fast and adaptive scheme for measurement of signal amplitude for protection and control purposes is presented. [...]
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Adaptive Measurement of Power System Currents, Voltages and Impedances in Off-nominal Frequency Conditions / Szafran, J ; Rebizant, W ; Michalik, M [I08/1999/I-047] [ENY-ARTICLE-2008-162]
In the paper the problem of basic power system electric quantities (current, voltage magnitudes, power and impedance) measurement in off-nominal frequency conditions is considered under assumption thal the quantities are calculated from orthogonal components of input current and voltage phasors which are obtained by use of the nonrecursive digital filters. [...]
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Efficient Frequency-Adaptive Amplitude Tracking Algorithms for Protection Purposes / Rebizant, W ; Rusek, B [I08/2003/I-091] [ENY-ARTICLE-2008-159]
The new, fast and adaptive algorithms for measurement of signal amplitude for protection and control purposes are presented. [...]
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How to Reduce Errors of Distance Fault Locating Algorithms / Wiszniewski, A [ENY-ARTICLE-2008-198]
Distance fault locating digital algorithms are often based on the processing of fundamental components which are contained in the currents and Voltages. [...]
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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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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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