Electrical Engineering Wroclaw University of Technology

Electrical Engineering Wroclaw University of Technology 70 records found  beginprevious53 - 62next  jump to record: Search took 0.01 seconds. 
53. 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. [...]
http://zet10.ipee.pwr.wroc.pl/record/37/files/
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54. Time-frequency analysis of non-stationary three phase signals / Leonowicz, Z ; Lobos, T [ENY-ARTICLE-2008-028]
New method of observation and diagnosis of inverter-fed induction motor drives is developed and tested. [...]
http://zet10.ipee.pwr.wroc.pl/record/35/files/
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55. 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). [...]
http://zet10.ipee.pwr.wroc.pl/record/32/files/
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56. Power system harmonics estimation using linear least squares method and SVD / Lobos, T ; Kozina, T ; Koglin, H J [ISSN: 1350-2360CODEN: IGTDE2INSPEC: 7099688AZ I07/01/I-073] [ENY-ARTICLE-2008-022]
The paper examines singular value decomposition (SVD) for the estimation of harmonics in signals in the presence of high noise. [...]
http://zet10.ipee.pwr.wroc.pl/record/29/files/
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57. Analiza okresowych przebiegów odkształconych z zastosowaniem statystyk wyższych rzędów / Leonowicz, Z ; Lobos, T ; Ruczewski, P ; Szymanda, J [ENY-ARTICLE-2008-021]
During recent years higher order statistics (HOS) have found a wide applicability in many diverse fields, e. [...]
http://zet10.ipee.pwr.wroc.pl/record/25/files/
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58. Detection of Remote Harmonics Using SVD / Lobos, T ; Kozina, T ; Osowski, S [I07/1998/I-389] [ENY-ARTICLE-2008-020]
The paper examines the singular value decomposition (SVD) for detection of remote harmonics in signals, in the presence of high noise contaminating the measured waveform. [...]
http://zet10.ipee.pwr.wroc.pl/record/24/files/
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59. Hochauflösende Signalverarbeitungsmethoden in der Elektrotechnik / Lobos, T ; Leonowicz, Z [AZ I07/03/I-002] [ENY-ARTICLE-2008-016]
Moderne Frequenzumrichter erzeugen ein breites Spektrum von harmonischen Komponenten, in einigen Fällen nicht nur charakteristische Harmonische, aber auch eine ganze Menge von nichtcharakteristischen Harmonischen und Interharmonischen. [...]
http://zet10.ipee.pwr.wroc.pl/record/19/files/
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60. 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. [...]
http://zet10.ipee.pwr.wroc.pl/record/16/files/
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61. 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. [...]
http://zet10.ipee.pwr.wroc.pl/record/15/files/
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62. 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. [...]
http://zet10.ipee.pwr.wroc.pl/record/14/files/
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