Repozytorium Eny Politechnika Wrocławska

Repozytorium W. Elektrycznego Politechniki Wrocławskiej Znaleziono 192 rekordów  początekpoprzedni151 - 175następny  skocz do rekordu: Szukanie trwało 0.02 sekund. 
151. Analysis of distorted waveforms using parametric spectrum estimation methods and robust averaging / Leonowicz, Z [ENY-ARTICLE-2008-074]
After the description of parametric methods (ESPRIT and MUSIC) and selected robust location measures (robust averaging methods), the comparison of the frequency and amplitude estimation error, based on numerical simulation is presented. [...]
http://zet10.ipee.pwr.wroc.pl/record/89/files/
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152. 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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153. Time-Frequency Analysis of Distorted Electric Signals using a Complex Space-Phasor / Leonowicz, Z [ENY-PREPRINT-2008-004]
We consider applying non-parametric and parametric methods for calculation of time-frequency representation of non-stationary electric waveforms. [...]
http://zet10.ipee.pwr.wroc.pl/record/87/files/
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154. Classification of Electric Signals Based on Time-Frequency Signal Decomposition / Leonowicz, Z [ENY-PREPRINT-2008-003]
A classification procedure based on time-frequency decomposition of the signal is presented. [...]
http://zet10.ipee.pwr.wroc.pl/record/86/files/
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155. Effect of short HV pulses on bacteria and fungi / Mazurek, B ; Lubicki, P ; Staroniewicz, Z [I07/1996/I-236] [ENY-ARTICLE-2008-074]
The survival of three kinds of microorganisms under strongpulse electric field conditions was investigated with a possible application of the electric pulse method for sterilization of consumable liquids. [...]
http://zet10.ipee.pwr.wroc.pl/record/83/files/
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156. X-ray Emission Accompanying Cathode Microdischarge / Mazurek, B ; Nowak, A ; Tyman, A [I07/1993/P-480] [ENY-ARTICLE-2008-073]
Electrical discharge in vacuum is accompanied by X-ray radiation. [...]
http://zet10.ipee.pwr.wroc.pl/record/82/files/
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157. The effect of a metallic particle near a spacer on flashover phenomena in SF6. / Mazurek, B ; Cross, J D ; Heeswijk van, R G [I07/1992/P-451] [ENY-ARTICLE-2008-072]
This paper presents a study of the flashover mechanism initiated by metallic particles in SF6 gas. [...]
http://zet10.ipee.pwr.wroc.pl/record/81/files/
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158. The Effect of Low Temperature on the Role Played by Electrodes in Vacuum Breakdown / Mazurek, B [I07/1988/P-343] [ENY-ARTICLE-2008-070]
Electrical breakdown requires the creation of plasma in inter electrode space. [...]
http://zet10.ipee.pwr.wroc.pl/record/79/files/
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159. Transiente Vorgänge bei Erdschlüssen in Mittelspannungsnetzen / Lobos, T [I08/1975/I-097] [ENY-ARTICLE-2008-061]
Heim Erdschluss in Netzen mit isoliertem Sternpunkt und induktiver Sternpunkterdung treten transiente Vorgänge auf, die meistens einen schwingenden Charakter haben, da das Netz ein System mit passiven Elementen L und C bildet. [...]
http://zet10.ipee.pwr.wroc.pl/record/70/files/
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160. Distanzschutz mit Mikrorechnern / Koglin, H J ; Lobos, T [I08/1980/P-128] [ENY-ARTICLE-2008-058]
Nachdem erst vor kurzem in der Schutztechnik die Technologie der elektromechanischen Relais durch den elektronischen ("statischen") Schutz abgelöst wurde, stehen wir zur Zeit bereits wieder vor einer Wende: Die Technologie der Mikroprozessoren macht auch vor diesem Bereich nicht halt; im Gegenteil: der Mikrorechner ist für die schwierigen Meßaufgaben in der Schutztechnik geradezu prädestiniert. [...]
http://zet10.ipee.pwr.wroc.pl/record/67/files/
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161. Adaptive Neural Networks for Robust Estimation of parameters of Noisy Harmonic Signals / Cichocki, A ; Kostyla, P ; Lobos, T ; Waclawek, Z [I07/96/I-278] [ENY-ARTICLE-2008-054]
In many applications, very fast methods are required for estimating and measurement of parameters of harmonic signals distorted by noise. [...]
http://zet10.ipee.pwr.wroc.pl/record/63/files/
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162. 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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163. Rapid dissolved gas analysis by means of electrochemical gas sensors / Zylka, P ; Mazurek, B [I07/02/I-021] [ENY-ARTICLE-2008-050]
Rapid, introductory analysis of gases dissolved in insulating oil DGA carried out in the field can help in effective screening of faulty transformers as well as minimising number of classical laboratory chromatographic DGA tests. [...]
http://zet10.ipee.pwr.wroc.pl/record/59/files/
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164. Field emission current from high-Tc ceramic cathodes / Ziaja, J ; Zylka, P [I07/99/P-545] [ENY-ARTICLE-2008-049]
In this work the result of emission phenomena investigations are presented. [...]
http://zet10.ipee.pwr.wroc.pl/record/58/files/
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165. Electrochemical gas sensors can supplement chromatography-based DGA / Zylka, P [I07/04/I-035DOI 10.1007/s00202-004-0230-x] [ENY-ARTICLE-2008-048]
Shortening a time gap between oil sampling and its analysis as well as a rapid and correct interpretation of dissolved gas analysis (DGA) results are crucial for effective screening of faulty transformers in predictive-oriented equipment maintenance. [...]
http://zet10.ipee.pwr.wroc.pl/record/57/files/
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166. Electrochemical gas sensors can make DGA a portable screening procedure / Zylka, P [RZ I07/04/I-001] [ENY-ARTICLE-2008-047]
Dissolved Gas Analysis (DGA) in its classical chromatography-based laboratory approach has become a routine procedure for testing and assessment of power transformer condition. [...]
http://zet10.ipee.pwr.wroc.pl/record/56/files/
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167. DGA system utilising semiconductor gas sensors / Zylka, P ; Mazurek, B [RZ I07/99/I-448SPIE Proceedings Series, ISSN 0277-768X; Vol. 3730] [ENY-ARTICLE-2008-046]
Thermal and electric faults developing inside transformers lead to the generation of gaseous products dissolving in the insulating oil. [...]
http://zet10.ipee.pwr.wroc.pl/record/55/files/
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168. Phase relations in Bi2O3-SrO-CuO system at 800 degrees C / Horyn, R ; Filatow, I ; Ziaja, J ; Wolcyrz, M ; et al [AZ I07/89/P-394] [ENY-ARTICLE-2008-044]
Phase relations in the Bi2O3SrO-CuO system at 800°C are presented. [...]
http://zet10.ipee.pwr.wroc.pl/record/53/files/
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169. Varistor performance of nanocrystalline Zn-Bi-O thin films prepared by reactive RF magnetron sputtering at room temperature / Mista, W ; Ziaja, J ; Gubanski, A [AZ I07/03/P-004doi:10.1016/j.vacuum.2003.12.141] [ENY-ARTICLE-2008-042]
The Zn–Bi–O films were deposited by reactive radio frequency magnetron sputtering in oxygen atmosphere from ZnBi alloy target (wt. [...]
http://zet10.ipee.pwr.wroc.pl/record/50/files/
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170. Effect of area on surface flashover voltage in vacuum / Cross, J D ; Mazurek, B [ISSN: 0018-9367INSPEC:3152462DOI: 10.1109/14.2330] [ENY-ARTICLE-2008-041]
It is known that the breakdown voltage in a vacuum insulation system drops with an increase in linear dimension of electrodes and with an increase in the number of insulating spacers bridging the gap. [...]
http://zet10.ipee.pwr.wroc.pl/record/49/files/
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171. Spectral estimation of distorted signals using Prony method / Lobos, T ; Rezmer, J [ENY-ARTICLE-2008-040]
Modern Frequency power converters generate a wide spectrum of harmonic components. [...]
http://zet10.ipee.pwr.wroc.pl/record/48/files/
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172. Parameter Estimation of Distorted Signals Using Prony Method / Lobos, T ; Rezmer, J ; Schegner, P [ENY-ARTICLE-2008-039]
Modern frequency power converters generate a wide spectrum of harmonic components. [...]
http://zet10.ipee.pwr.wroc.pl/record/47/files/
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173. 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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174. Comparison between step and pulsed electroacoustic techniques using both PVDF and LiNbO3 transducers / Motyl, E [AZ I07/01/I-020] [ENY-ARTICLE-2008-037]
Two kinds of piezoelectric transducers thin PCDF foil and thick LiBNO3 crystal were used as strain waves detectors. [...]
http://zet10.ipee.pwr.wroc.pl/record/44/files/
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175. Changes of space charge profiles in PET electrets after thermally stimulated discharges / Motyl, E [RZ I07/02/I-053] [ENY-ARTICLE-2008-036]
Behaviour of electric changes in the PET film has been investigated under the condition of partial discharging at higher annealing temperatures. [...]
http://zet10.ipee.pwr.wroc.pl/record/43/files/
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Repozytorium W. Elektrycznego Politechniki Wrocławskiej : Znaleziono 192 rekordów   początekpoprzedni151 - 175następny  skocz do rekordu:
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