Electrical Engineering Wroclaw University of Technology

Electrical Engineering Wroclaw University of Technology 9 records found  Search took 0.01 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. Advanced spectral analysis of out-of-step operation of synchronous machines / Leonowicz, Z ; Lobos, T [RZ I07/2003/I-068] [ENY-ARTICLE-2009-250]
The out-of-step operation conditions of a synchronous machine may occur as a result of a power system three-phase fault. [...]
http://zet10.ipee.pwr.wroc.pl/record/311/files/
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4. Fuzzy Set Approach to Transformer Differential Relay / Wiszniewski, A ; Kasztenny, B [ISBN: 0-85296-559-1] [ENY-ARTICLE-2008-210]
In the process of decision making by a transformer differential relay often occurs a measure of uncertainty. [...]
http://zet10.ipee.pwr.wroc.pl/record/264/files/
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5. Statistics of Short-Circuit Signals for Power System Protection Purposes / Rebizant, W ; Szafran, J ; Feser, K ; Oechsle, F [I08/2000/I-134] [ENY-ARTICLE-2008-153]
Basic ideas of probability and statistics with application to chosen power system protection problems are presented. [...]
http://zet10.ipee.pwr.wroc.pl/record/195/files/
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6. Power Swing Phenomena and its Detection and Prevention / Khan, U N ; Lu, Y [ENY-ARTICLE-2008-140]
Power Swing which is basically caused by the large disturbances in the power system which if not blocked could cause wrong operation of the distance relay and can generate wrong or undesired tripping of the transmission line circuit breaker. [...]
http://zet10.ipee.pwr.wroc.pl/record/178/files/
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7. Parametric methods for time-frequency analysis of electric signals / Leonowicz, Z [ISSN 0324-945x] [ENY-BOOK-2008-001]
The author presents a new approach to spectral analysis of electric signals and related problems encountered in power systems. [...]
http://zet10.ipee.pwr.wroc.pl/record/11/files/
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8. Application of higher-order spectra for signal processing in electrical power engineering / Lobos, T ; Leonowicz, Z ; Szymanda, J ; Ruczewski, P [ENY-ARTICLE-2008-004]
In power spectrum estimation, the signal under consideration is processed in such a way, that the distribution of power among its frequency is estimated and phase relations between the frequency components are suppressed. [...]
http://zet10.ipee.pwr.wroc.pl/record/4/files/
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9. Analysis of non-stationary signals in power systems / Leonowicz, Z [ENY-ARTICLE-2008-002]
Classical techniques to estimate the spectrum of the multi-component signal are based on Fourier-based transformations. [...]
http://zet10.ipee.pwr.wroc.pl/record/2/files/
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