Electrical Engineering Wroclaw University of Technology

Electrical Engineering Wroclaw University of Technology 18 records found  1 - 10next  jump to record: Search took 0.02 seconds. 
1. Analysis of SDFT based phase detection system for grid synchronization of distributed generation systems / Chitti Babu, B ; Sridharan, K ; Rosolowski, E ; Leonowicz, Z [http://dx.doi.org/10.1016/j.jestch.2014.07.005] [ENY-PREPRINT-2014-015]
A fast and exact detection of phase and fundamental frequency of grid voltage/current is essential for calculating accurate reference signal in order to implement the control algorithm of inverter-interfaced distributed generation (DG) system and realize precise harmonic compensation. [...]
http://zet10.ipee.pwr.wroc.pl/record/455/files/
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2. Analysis of Recursive DFT Filtering Based Grid Synchronization of Distributed Generation System / Chitti Babu, B ; Sridharan, K ; Rosolowski, E ; Leonowicz, Z [I08/2014/I-069] [ENY-PREPRINT-2014-014]
A converter-interfaced distributed generation (DG) system, like, wind power system, photovoltaic (PV) and micro-turbine-generator system, requires a fast and exact detection of phase and fundamental frequency of grid current in order to implement the control algorithm of power converters by generating reference currents signals. [...]
http://zet10.ipee.pwr.wroc.pl/record/454/files/
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3. Analysis of Sub-Harmonics in Power Systems / Leonowicz, Z [10.1109/EEEIC.2010.5489951 ] [ENY-ARTICLE-2013-354]
With a wide range of power electronics-related applications in power systems, harmonic currents are increasing at an alarming rate which has greatly deteriorated the power quality in electrical power networks. [...]
http://zet10.ipee.pwr.wroc.pl/record/443/files/
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4. 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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5. 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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6. 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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7. 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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8. Wavelets an Hilbert Transform methods for detection of voltage dips and micro interruptions / Caciotta, M ; Giarnetti, S ; Leccese, F ; Leonowicz, Z ; et al [ENY-PREPRINT-2009-009]
In electrical energy power network, disturbances can cause problems in electronic devices therefore their monitoring is fundamental in Power Quality field both to properly dimension protections and to calculate compensations in case of malfunction of the apparatus. [...]
http://zet10.ipee.pwr.wroc.pl/record/315/files/
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9. Analysis of non-stationary electric signals using the S-transform / Leonowicz, Z ; Lobos, T ; Wozniak, K [ENY-ARTICLE-2009-253]
Purpose – The purpose of this paper is to compare the accuracy of tracking the amplitude and frequency changes of non-stationary electric signals. [...]
http://zet10.ipee.pwr.wroc.pl/record/314/files/
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10. Harmonics - Power Quality / Leonowicz, Z [ENY-TEACHING-2009-031]
Lecture "Harmonic - Power Quality".
http://zet10.ipee.pwr.wroc.pl/record/297/files/
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