Artykuły

Artykuły Znaleziono 348 rekordów  początekpoprzedni181 - 190następnykoniec  skocz do rekordu: Szukanie trwało 0.01 sekund. 
181. New power quality indices / Leonowicz, Z ; [RZ I07/2007/I-024] [ENY-ARTICLE-2008-171]
The author shows that the use of high-resolution 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 inter/harmonic groups and subgroups). [...]
http://zet10.ipee.pwr.wroc.pl/record/220/files/
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182. Measurements of interfacial charges in layered PTFE using step electroacoustic technique / Motyl, E [I07/2001/I-019] [ENY-ARTICLE-2008-170]
The step-electroacoustic (SEA) technique was applied to measure interfacial charges in layered PTFE. [...]
http://zet10.ipee.pwr.wroc.pl/record/219/files/
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183. Real charges and frozen-in-polarisation in PET electrets / Motyl, E ; Krauze, T [I07/2005/I-040] [ENY-ARTICLE-2008-169]
The new experimental method for discriminating between polarization and real charges in polymeric electrets was suggested. [...]
http://zet10.ipee.pwr.wroc.pl/record/218/files/
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184. Measurement of frozen-in polarization in polycarbonate films / Motyl, E ; Krauze, T [I07/2006/I-018] [ENY-ARTICLE-2008-168]
Space charge accumulated in dielectric materials affect their properties. [...]
http://zet10.ipee.pwr.wroc.pl/record/217/files/
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185. Generation of Short Acoustic Waveforms Using Piezoelements / Motyl, E [I07/2001/I-058] [ENY-ARTICLE-2008-167]
Polymeric (PVDF), ceramic (PZT), crystalline (LiNb03) and composite (PZT/PS) piezoelectric elements were used as actuator, for generation of short standard waves Such kind of acoustic waveforms are useful for space charge distribution measurements in dielectric by pressure propagation method. [...]
http://zet10.ipee.pwr.wroc.pl/record/216/files/
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186. Electro-physical properties of PTFE/bronze composites / Motyl, E ; Lisowski, M [RZ I07/02/I-054] [ENY-ARTICLE-2008-166]
Electret state of polymer/metal composite based on polytetrafluornthylene (PTFE) and bronze powder was investigated. [...]
http://zet10.ipee.pwr.wroc.pl/record/213/files/
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187. Distributions of Polarization in PVDF Piezocables / Motyl, E [ENY-ARTICLE-2008-165]
The pulsed (PEA) and step (SEA) electroacoustic methods — applied for the measurements of polarisation distribution along the radius of piezoelectric cables. [...]
http://zet10.ipee.pwr.wroc.pl/record/212/files/
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188. Dielectric Relaxations of Some Pyrrones / Sek, D ; Schab-Balcerzak, E ; Mazurek, B ; Motyl, E ; et al [ENY-ARTICLE-2008-164]
The properties of a series of new synthesized poly(imidazopyrolones) shortly named here as pyrrones, are presented. [...]
http://zet10.ipee.pwr.wroc.pl/record/211/files/
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189. Fuzzy Logic Application to Out-Of-Step Protection of Generators / Rebizant, W ; Feser, K [I08/2001/I-110] [ENY-ARTICLE-2008-163]
Efficient protection scheme against out-of-step (OS) conditions based on fuzzy logic (FL) technique is presented. [...]
http://zet10.ipee.pwr.wroc.pl/record/210/files/
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190. 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. [...]
http://zet10.ipee.pwr.wroc.pl/record/209/files/
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Artykuły : Znaleziono 348 rekordów   początekpoprzedni181 - 190następnykoniec  skocz do rekordu: