Electrical Engineering Wroclaw University of Technology

Electrical Engineering Wroclaw University of Technology 300 records found  beginprevious51 - 75nextend  jump to record: Search took 0.02 seconds. 
51. EMI Shielding using Composite Materials with Plasma Layers / Ziaja, J ; Jaroszewski, M [ENY-BOOK-2012-004]
Electromagnetic compatibility (EMC), including the engineering of materials used for shielding,, is currently one of the most extensively developing field of applications of composite materials (Bula et al. [...]
http://zet10.ipee.pwr.wroc.pl/record/393/files/
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52. Dielectric characterization of EM composite barrier materials with plasma layers on nonwoven fabrics / Jaroszewski, M [ENY-ARTICLE-2012-306]
Currently, one of the most extensively developing field of applications of composite materials, is engineering of materials used for shielding from electromagnetic fields. [...]
http://zet10.ipee.pwr.wroc.pl/record/392/files/
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53. A development of a solar cell problem. Some further description / Swistacz, B [ENY-ARTICLE-2011-304]
A new concept of a space charge transport between the two electrodes is presented - It was found that generation processes could be described in terms of a voltage parameter V10 and of a field parameter E10 . [...]
http://zet10.ipee.pwr.wroc.pl/record/389/files/
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54. Wind Energy Conversion Systems Grid Connection / Szafron, C [preprint] [ENY-THESIS-2011-018]
The first part of the thesis contains an introduction into wind turbine construction concepts, such as wind turbine design, performance and electrical systems used in wind turbines operating at fixed speed and variable speed. [...]
http://zet10.ipee.pwr.wroc.pl/record/376/files/
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55. Power line fault location using the Complex Space-Phasor and Hilbert-Huang Transform / Bernadić, A ; Leonowicz, Z [I07/2011/I-024] [ENY-PREPRINT-2011-012]
Fault location finding in power system is very important problem in power system monitoring. [...]
http://zet10.ipee.pwr.wroc.pl/record/374/files/
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56. Renewable Energy Sources in Poland / Leonowicz, Z [ENY-TEACHING-2010-037]
Status of RES in Poland in 2010. [...]
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57. Analysis of Distorted Waveforms in Power Converter Systems / Rezmer, J ; Leonowicz, Z [ENY-PREPRINT-2010-011]
The paper presents a method of determining the frequency developed and based on the Prony model. [...]
http://zet10.ipee.pwr.wroc.pl/record/369/files/
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58. New Digital Algorithms for On-line Determination of Symmetrical Components in Power Systems / Lobos, T ; Schneider, E [ENY-ARTICLE-2010-293]
Using the Fourier method the Kalman theory and the Walsh functions, non-recursive algorithms for the on-line determination of the basic waveforms of the symmetrical components in three-phase power systems are introduced, investigated and compared. [...]
http://zet10.ipee.pwr.wroc.pl/record/366/files/
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59. Comparison between DFT, Adaptive Window DFT and EDFT for Power Quality Frequency Spectrum Analysis / Grossoni, M ; Giarnetti, S ; Leccese, F ; Leonowicz, Z [DOI: 10.13140/2.1.3741.1849] [ENY-ARTICLE-2010-292]
Spectral leakage and picket-fence effects associated with the system fundamental frequency variation and improperly selected sampling time window prevents a direct application of the DFT algorithm with a constant sampling rate. [...]
http://zet10.ipee.pwr.wroc.pl/record/364/files/
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60. Reactive Power Compensation / Kepka, J [ENY-THESIS-2010-014]
Over the last few years, the interest in reactive power compensation has been growing, mainly because of the way in which energy supplier charge a customer for reactive power. [...]
http://zet10.ipee.pwr.wroc.pl/record/360/files/
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61. Street Lighting Management System “Jupiter” / Pliszczak, R [ENY-THESIS-2010-013]
Last year (2009) in September on the company Elektrotim S. [...]
http://zet10.ipee.pwr.wroc.pl/record/358/files/
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62. Wavelets and Hilbert Transform for detection of short disturbances in electrical power networks / Caciotta, M ; Giarnetti, S ; Leccese, F ; Leonowicz, Z [ENY-ARTICLE-2010-287]
In electrical energy power network, disturbances can cause problems in electronic devices therefore their monitoring is fundamental to properly design the protection and compensation devices. [...]
http://zet10.ipee.pwr.wroc.pl/record/357/files/
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63. Control and Grid Synchronization for Distributed Power Generation Systems / Leonowicz, Z [ENY-TEACHING-2010-035]
Overview--- Main DPGS structures, PV and fuel cell (FC) system, Classification of wind turbine (WT) systems with regard to the use of power electronics, Control structures for grid-side converter , Characteristics of control strategies under grid fault conditions , Grid synchronization methods.
http://zet10.ipee.pwr.wroc.pl/record/351/files/
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64. Power-Electronic Systems for the Grid Integration of Renewable Energy Sources / Leonowicz, Z [ENY-TEACHING-2010-034]
--Outline-- New trends in power electronics for the integration of wind and photovoltaic Review of the appropriate storage-system technology Future trends in renewable energy systems based on reliability and maturity --Introduction-- Increasing number of renewable energy sources and distributed generators New strategies for the operation and management of the electricity grid Improve the power-supply reliability and quality Liberalization of the grids leads to new management structures.
http://zet10.ipee.pwr.wroc.pl/record/350/files/
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65. Inclined plane test, influence of transformer power / Chrzan, K L [ISBN 978-0-620-44584-9] [ENY-ARTICLE-2009-281]
The inclined plane method is one of a few other tests that prove the material resistance to erosion and tracking caused by surface discharges. [...]
http://zet10.ipee.pwr.wroc.pl/record/349/files/
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66. Hygroscopic properties of natural pollutants on silicone rubber surfaces / Chrzan, K L ; Greyling, C [ISBN 978-0-620-44584-9] [ENY-ARTICLE-2009-280]
The aim of this research is to determine whether hydrophilic and hygroscopic particulate pollutants on glass and silicone insulator surfaces maintain their electrical and water absorption properties, once low molecular weight siloxanes have migrated through the pollution layer. [...]
http://zet10.ipee.pwr.wroc.pl/record/348/files/
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67. Artificial rain test of outdoor long rod insulators / Chrzan, K L ; Streubel, H [ISBN 978-0-620-44584-9] [ENY-ARTICLE-2009-279]
Due to the decrease of industrial contamination emission nearly the whole territory of Poland belongs to the pollution class light. [...]
http://zet10.ipee.pwr.wroc.pl/record/347/files/
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68. Effect of impulse polarity on the flashover voltage of polluted cap and pin insulators / Chrzan, K L ; Schwarz, H ; Haeusler, H [ISBN 978-0-620-44584-9] [ENY-ARTICLE-2009-278]
The lightning impulse flashover voltage on clean and polluted cap and pin insulators under high humidity conditions were measured. [...]
http://zet10.ipee.pwr.wroc.pl/record/346/files/
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69. Lightning impulse performance of polluted medium voltage insulators / Chrzan, K L [ISBN 978-0-620-44584-9] [ENY-ARTICLE-2009-277]
The concentrated dry bands on many silicone rubber insulators and also on porcelain insulators were observed by means of termovision camera. [...]
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70. Silicone rubber insulators with notched surface / Chrzan, K L [ISBN 978-0-620-44584-9] [ENY-ARTICLE-2009-276]
A modification of an insulator profile was proposed and the advantage of a new solution was shown. [...]
http://zet10.ipee.pwr.wroc.pl/record/344/files/
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71. Acoustic emission from BiSrCaCuO superconducting samples / Kisiel, A ; Wozny, L [I07/2002/I-045] [ENY-ARTICLE-2009-275]
The aim of the paper was to show if the acoustic emission (AE) signals from BiSrCaCuO ceramic superconductors appear during normal state–superconductivity transition. [...]
http://zet10.ipee.pwr.wroc.pl/record/343/files/
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72. New solution to the problem of bipolar injection in insulator and semiconductor devices / Swistacz, B [ENY-ARTICLE-2009-273]
A problem of the space charge transport with two mobilities is presented. [...]
http://zet10.ipee.pwr.wroc.pl/record/341/files/
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73. Time-varying signal parameters for assessment of disturbances in wind energy systems / Lobos, T ; Schegner, P ; Sikorski, T [ENY-ARTICLE-2009-270]
This paper proposes some extended method for assessment of transient disturbances in wind energy systems. [...]
http://zet10.ipee.pwr.wroc.pl/record/338/files/
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74. Detection of Short Transients and Interruptions using the Hilbert Transform / Caciotta, M ; Giarnetti, S ; Leccese, F ; Leonowicz, Z [ENY-ARTICLE-2009-269]
In electrical energy power networks, disturbances can cause problems in electronic devices so their monitoring is fundamental in Power Quality. [...]
http://zet10.ipee.pwr.wroc.pl/record/337/files/
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75. 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. [...]
http://zet10.ipee.pwr.wroc.pl/record/336/files/
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