Electrical Engineering Wroclaw University of Technology

Electrical Engineering Wroclaw University of Technology 27 records found  1 - 10nextend  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. [...]
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2. 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. [...]
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3. 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. [...]
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4. 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. [...]
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5. 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. [...]
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6. Power Quality Analysis of Grid-Connected Wind Turbine System / Janik, P ; Lobos, T ; Rezmer, J ; Sikorski, T [ENY-ARTICLE-2009-262]
In this paper time-frequency methods have been investigated for complex investigations of transient states in wind power plants. [...]
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7. Power Distortion Issues in Wind Turbine Power Systems Under Transient States / Lobos, T ; Rezmer, J ; Sikorski, T ; Waclawek, Z [AZ I07/2009/I-001] [ENY-ARTICLE-2009-254]
In this paper time-frequency methods have been investigated for complex investigations of transient states in wind power plants. [...]
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8. Modern spectral analysis of non-stationary signals in electrical power systems / Leonowicz, Z ; Lobos, T ; Schegner, P [RZ I07/2002/I-048] [ENY-ARTICLE-2009-251]
A novel approach to harmonic and interharmonic analysis, based on the “subspace” methods, is proposed. [...]
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9. Automatic Fault Classification in Power Electronics Using Time-Frequency Distribution and Neural Networks / Leonowicz, Z ; Lobos, T [RZ I07/2003/I-077] [ENY-ARTICLE-2009-249]
A new method of fault analysis and detection by signal classification in frequency converters is presented. [...]
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10. Signal Processing and Power Quality / Leonowicz, Z [ENY-TEACHING-2009-029]
Lecture "Signal Processing and Power Quality".
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