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WDM in Courses of Communication Technologies
Filka, Miloslav - Bernkopf, Miroslav

Formato:	,
Enlaces:	This conference paper shows and demonstrates how modern technologies (such as WDM – Wavelength Division Multiplex) were introduced to students of Optical Networks lectured at Brno University of Technology, Faculty of Electrical Engineering and Communication, Dept. of Telecommunications.
Fecha:	2011-06-17
Recurso:	Advances in Electrical and Electronic Engineering

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Diagnostics and Reconfiguration of Control Systems
Krokavec, Dusan - Filasova, Anna

Formato:	,
Enlaces:	This contribution summarizes some of the major trends, as well as real opportunities for the application of system fault diagnosis and reconfiguration control structures in automatic control systems. There are referenced ongoing concepts for residual generation, described design approaches in virtual reconfiguration…
Fecha:	2011-06-17
Recurso:	Advances in Electrical and Electronic Engineering

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Mathematical Model of Thyristor Inverter Including a Series-parallel Resonant Circuit
Luft, Miroslaw; Technical University of Radom - Szychta, Elzbieta

Formato:	,
Enlaces:	The article presents a mathematical model of thyristor inverter including a series-parallel resonant circuit with theaid of state variable method. Maple procedures are used to compute current and voltage waveforms in the inverter.
Fecha:	2011-06-17
Recurso:	Advances in Electrical and Electronic Engineering

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High-Freqeuncy Analysis of Three-Winding Autotransformers 400/121/34 kV
Gutten, Miroslav - Brandt, Martin - Polansky, Roman - Prosr, Pavel

Formato:	,
Enlaces:	This article deals with a description of methods of an experimental analysis concerning the actual condition of windings and magnetic circuit of the autotransformer, which is required in power transmission companies all over the world.
Fecha:	2011-06-17
Recurso:	Advances in Electrical and Electronic Engineering

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Analysis of PMMT Operation for Renewable (PV/FC) Energy Source
Sul, Robert - Fibich, Peter - Frivaldsky, Michal

Formato:	,
Enlaces:	Utilization and construction of renewable energy sources require complexity of whole system. It is considered touse a set of devices that are necessary for energy conversion, accumulation, preparation and its distribution into electrical power supply network. The way of realization…
Fecha:	2011-06-17
Recurso:	Advances in Electrical and Electronic Engineering

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Using of the Modern Semiconductor Devices Based on the SiC
Drabek, Pavel

Formato:	,
Enlaces:	This paper deals with possibility of application of the semiconductor devices based on the SiC (Silicon Carbide) inthe power electronics. Basic synopsis of SiC based materials problems are presented, appreciation of their properties incomparison with current using power semiconductor devices…
Fecha:	2011-06-17
Recurso:	Advances in Electrical and Electronic Engineering

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The Assessment of Working Conditions of Traction Substation for Power and Reactive Energy
Wojciechowski, Jerzy - Lukasik, Zbigniew

Formato:	,
Enlaces:	In this paper, problems concerning the management of reactive power of DC traction substation have been discussed. The structure of traction system and its main elements has been sketched. Reactive power issue with respect to rectifier sets has been presented.…
Fecha:	2011-06-17
Recurso:	Advances in Electrical and Electronic Engineering

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Quality of Power Supply in European View
Prokop, Lukas - Hradilek, Zdenek

Formato:	,
Enlaces:	This paper deals with comparisons of situation in quality of power supply regulation in some of European countries, which are interested in CEER (Council of European Energy Regulators). Especially we focused our analysis on reliability indices, relationship between supplier and…
Fecha:	2011-06-17
Recurso:	Advances in Electrical and Electronic Engineering

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Estimates of Quantities in a Hall Effect Geodynamo Theory
de Paor, Annraoi M; NUI Dublin

Formato:	,
Enlaces:	Currents, resistances, dynamo constant, Hall voltage coefficient and inductances are estimated for the author’s geodynamo theory incorporating the Hall Effect. It is concluded that the Hall Coefficient in the bulk liquid core of the Earth is approximately 1.512x10-1, orders of…
Fecha:	2011-06-17
Recurso:	Advances in Electrical and Electronic Engineering

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10.

Estimation of Energy Not Supply
Medvec, Zdenek - Prokop, Lukas

Formato:	,
Enlaces:	Damages in industrial company are raising during electrical interruption of power supply. These damages have usually different character and financial damages are most usual. Value of damage is nearly pertinent to type of industrial branch and working load of production…
Fecha:	2011-06-17
Recurso:	Advances in Electrical and Electronic Engineering

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11.

Analysis of Setups of the Control of Rail Microprocessor Systems
Kornaszewski, Mieczyslaw - Lukasik, Zbigniew

Formato:	,
Enlaces:	In the article will have been introduced possibilities following from the application of the microprocessor technology in rail systems of the control of traffic will remain for example of modern signalling on railway crossings. Introduction to microcomputer and microprocessor systems…
Fecha:	2011-06-17
Recurso:	Advances in Electrical and Electronic Engineering

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12.

Numerical Solution of Magnetostatic Field of Maglev System
Sobotka, Jaroslav

Formato:	,
Enlaces:	The paper deals with the design of the levitation and guidance system of the levitation train Transrapid 08 by means of QuickField 5.0 – a 2D program formagnetic electromagnetic fields solutions.
Fecha:	2011-06-17
Recurso:	Advances in Electrical and Electronic Engineering

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13.

Calculation of Forces Acting on Bars of Induction Machina
Hruska, Karel

Formato:	,
Enlaces:	This calculation is based on calculation of torque components of induction machines. Basic torque components are expanded, using knowledge of machine’s geometry, to the periphery of machine’s rotor. Using Fourier analysis of torque components it is possible to calculate forces…
Fecha:	2011-06-17
Recurso:	Advances in Electrical and Electronic Engineering

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14.

Principles of Audio Watermarking
Hrncar, Martin - Krajcovic, Jan

Formato:	,
Enlaces:	The article contains a brief overview of modern methods for embedding additional data in audio signals. It could have many reasons - for the purposes of access control or identification related to particular type of audio. This secret information is…
Fecha:	2011-06-17
Recurso:	Advances in Electrical and Electronic Engineering

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15.

Triple Play Service and IPTV Services Offered within it
Pajdusakova, Dagmar - Adamec, Bohumil

Formato:	,
Enlaces:	This paper deals with Triple Play multimedia service and figures its architecture. Triple Play offers voice, video and data services together in one customer connection. There is offered IPTV (Internet Protocol Television) service within this service, where we can include…
Fecha:	2011-06-17
Recurso:	Advances in Electrical and Electronic Engineering

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16.

Influence of Electric Discharges on Bearings of Electric Machina
Foldyna, Jiri - Chmelik, Karel - Misak, Stanislav

Formato:	,
Enlaces:	Bearing currents are one of cause’s bearings faults. The character of a lubricator belongs to main factor influencing an inception of bearing currents. We have analyzed the electric character variety kind of lubricators; the influence of lubricators on a bearing…
Fecha:	2011-06-17
Recurso:	Advances in Electrical and Electronic Engineering

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17.

Overview of Distributed Control Systems Formalisms
Holecko, Peter

Formato:	,
Enlaces:	This paper discusses a chosen set of mainly object-oriented formal and semiformal methods, methodics, environments and tools for specification, analysis, modeling, simulation, verification, development and synthesis of distributed control systems (DCS).
Fecha:	2011-06-17
Recurso:	Advances in Electrical and Electronic Engineering

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18.

The Parametric Model for PLC Reference Chanells and its Verification in Real PLC Environment
Roka, Rastislav

Formato:	,
Enlaces:	For the expansion of PLC systems, it is necesssary to have a detailed knowledge of the PLC transmission channel properties. This contribution shortly discusses characteristics of the PLC environment and a classification of PLC transmission channels. A main part is…
Fecha:	2011-06-17
Recurso:	Advances in Electrical and Electronic Engineering

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19.

Formation of Signals Harmonized with the Channel of Connection with Different Quality Criteria
Cherneva, Galina Petkova - Andonov, Antonio

Formato:	,
Enlaces:	The paper presents the optimization of the transmitted signal form according to a number of quality energy criteria. It is the transmission efficiency that has been assessed for signals harmonized with the channel of connection in comparison to the common-used…
Fecha:	2011-06-17
Recurso:	Advances in Electrical and Electronic Engineering

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20.

Methods of Risk Analysis of Telematic Objects
Stefanak, Jozef - Pribyl, Pavel - Spalek, Juraj

Formato:	,
Enlaces:	The paper focuses on basic description of the tunnel as a telematic object and its architecture. Conventional methods of risk analysis of telematic objects are introduced in relation to their safety. New approaches of risk quantification are shown in connection…
Fecha:	2011-06-17
Recurso:	Advances in Electrical and Electronic Engineering

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21.

The Magnetic Fields of Electric Motors and their EMC
Kovac, Dobroslav - Kovacova, Irena

Formato:	,
Enlaces:	This paper deals with the computer analysis of the electromagnetic compatibility (EMC) problems focused on the area of electrical machines, which can also disclose the concerning startling facts. A problem of interference between electric motor and surrounding space caused by…
Fecha:	2011-06-17
Recurso:	Advances in Electrical and Electronic Engineering

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22.

Some Thoughts on Electrical Interventions for the Control of Tremor in Parkinson's Dinase
Hearn, A. N.; NUI Dublin - Lowery, Madeleine; NUI Dublin - de Paor, Annraoi M; NUI Dublin

Formato:	,
Enlaces:	Ideas from control theory – state variable feedback, dither injection, the equivalent nonlinearity and the describing function-are applied to models developed to help understand the mechanisms of electrical interventions such as deep brain stimulation (DBS) for the alleviation of Parkinsonian…
Fecha:	2011-06-17
Recurso:	Advances in Electrical and Electronic Engineering

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23.

Traction Transformer 1 MV.A, Superconducting, Oil-immersed and Medium Frequency
Krasl, Milan - Pechanek, Roman - Vlk, Rostislav

Formato:	,
Enlaces:	This paper deals with comparing 3 types of transformers - superconducting, oil-immersed and middle-frequency. These transformers can be used for locomotive as the main transformer. Weight, sizes and losses are introduced. The influence of eddy currents is describes by middle-frequency…
Fecha:	2011-06-17
Recurso:	Advances in Electrical and Electronic Engineering

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24.

Sliding Mode Flux Observer of Induction Motor
Sutnar, Zdenek - Rodic, Miran - Peroutka, Zdenek

Formato:	,
Enlaces:	This paper deals with the sliding mode theory for direct torque and flux controlled (DTFC) induction motor drive. The aim of this paper is implementation of sliding mode theory for design of robust sensorless control of the drive with DTFC.…
Fecha:	2011-06-17
Recurso:	Advances in Electrical and Electronic Engineering

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25.

Mathematical Models of MIMO Channel
Poloha, Peter - Wieser, Vladimir - Haring, Jan - Majer, Norbert

Formato:	,
Enlaces:	In this contribution, we try to resolve the problem with multipath MIMO channel in wireless environment. To understand the environment, where multipath signal is transported, theoretical models will be applied. We will take a look on theoretical models and results…
Fecha:	2011-06-17
Recurso:	Advances in Electrical and Electronic Engineering

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26.

Directional Pattern Analysis of a Linear Phased Antenna
Haring, Jan - Majer, Norbert - Hronec, Rudolf

Formato:	,
Enlaces:	An antenna array is a system compound from simply radiators (dipoles, microstrip antennas), that together form desired radiation pattern. Phased array antennas consist of multiple stationary antenna elements, that are fed coherently and use variable phase or time-delay control at…
Fecha:	2011-06-17
Recurso:	Advances in Electrical and Electronic Engineering

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27.

Future of Electrotechnics: Ferrofluids
Mayer, Daniel

Formato:	,
Enlaces:	Magnetic liquids enabled development of new devices and technologies that are a useful alternative to theexisting ones. Many of these applications are still in progress and do not represent any break-through discoveries yet.Nevertheless one may expect that owing to their…
Fecha:	2011-06-17
Recurso:	Advances in Electrical and Electronic Engineering

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28.

Analysis of Simulated Reflection Characteristics of Uniform and Apodized Fiber Bragg Gratings
Gemzicky, Erik - Mullerova, Jarmila

Formato:	,
Enlaces:	In this paper, the simulations of the reflectance of the uniform and apodized fiber Bragg gratings (FBG) are presented. The simulations are based on the coupled–mode theory. The simulated reflectances of FBGs with different lengths and the modulations of the…
Fecha:	2011-06-17
Recurso:	Advances in Electrical and Electronic Engineering

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29.

, Full-Optical Logical Gates for Optical Signal Processing
Markovic, Miroslav - Dubovan, Josef - Dado, Milan

Formato:	,
Enlaces:	, This paper is dedicated to full-optical logical NOT, AND and NAND gates. In the first section are described logical functions based on Mach-Zehnder interferometric structure. The second part deals with full-optical logical gate AND, that utilizes TOAD structure. The…
Fecha:	2011-06-17
Recurso:	Advances in Electrical and Electronic Engineering

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30.

Accumulation Systems of Electric Energy Solved by Multicriteria Analysis Methods IPA and Topsis
Hradilek, Zdenek - Sebesta, Robert

Formato:	,
Enlaces:	This work deals with utilization of multicriteria analysis methods IPA and TOPSIS to assess three storage systems (Fuel Cells, Lead Acid Batteries and Pumped Storage Hydro Plants). Procedures of IPA and TOPSIS methods are described here as like as calculation…
Fecha:	2011-06-17
Recurso:	Advances in Electrical and Electronic Engineering

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31.

Economy of Renewable Resources of Energy Operation
Hradilek, Zdenek - Vyslouzil, Martin

Formato:	,
Enlaces:	Nowadays the renewable resources continue to be more important in the Czech Republic especially thanks to tendency reach of 8 % share of total production of electricity power which the Czech Republic sing on the European Union. This article contains…
Fecha:	2011-06-17
Recurso:	Advances in Electrical and Electronic Engineering

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32.

Partial Discharge Measurement in Operation: Problems with Disturbances and their Removing
Beranova, Lenka - Zalis, Karel

Formato:	,
Enlaces:	Diagnostics by partial discharge measurement is a modern diagnostic method for determination of the state of insulating systems of high voltage machines and equipment. In the High Voltage Laboratory of the Czech Technical University in Prague was developed the complex…
Fecha:	2011-06-17
Recurso:	Advances in Electrical and Electronic Engineering

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33.

Commutation Processes in Multiresonant ZVS Bridge Converter
Luft, Miroslaw; Technical University of Radom - Szychta, Elzbieta

Formato:	,
Enlaces:	The analysis of the multiresonant ZVS DC/DC bridge converter is presented. The control system of the converter is basedon the method of frequency control at the constant time of transistor turn-off with a phase shift. The operation of the circuit…
Fecha:	2011-06-17
Recurso:	Advances in Electrical and Electronic Engineering

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34.

New Configuration of Traction Converter with Medium-Frequency Transformer: Primary Part
Blahnik, Vojtech - Peroutka, Zdenek - Molnar, Jan - Michalik, Jan

Formato:	,
Enlaces:	This paper deals with new configuration of the traction converter with medium-frequency transformer intended for ac trolley wire fed locomotives. It is concerned to the primary serially connected single-phase voltage-source active rectifiers, which are directly connected to the trolley wire.…
Fecha:	2011-06-17
Recurso:	Advances in Electrical and Electronic Engineering

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35.

A Study of Appropriate Arrangement of Thermoelastic Actuator
Dolezal, Ivan - Donatova, Martina - Karban, Pavel - Ulrych, Bohus

Formato:	,
Enlaces:	The actuators working on the principle of thermoelasticity belong to novel elements of this kind that are characterized by very high forces acting at relatively low shifts of the dilatation element. The paper analyses their operation properties in the dependence…
Fecha:	2011-06-17
Recurso:	Advances in Electrical and Electronic Engineering

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36.

The Simulation of the Traction Drive with Middle-Frequency Transformer
Drabek, Pavel - Pittermann, Martin - Cedl, Marek - Los, Miroslav

Formato:	,
Enlaces:	This paper presents research motivated by industrial demand for special traction drive topology devoted to minimization of traction transformer weight against topology with classical 50Hz traction transformer. The special traction drive topology for AC power systems consists of input high…
Fecha:	2011-06-17
Recurso:	Advances in Electrical and Electronic Engineering

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37.

ZVZCS PWM DC-DC Converter with Energy Recovery Clamp
Durdik, Jaroslav - Ruscin, Vladimir

Formato:	,
Enlaces:	This paper presents research motivated by industrial demand for special traction drive topology devoted tominimization of traction transformer weight against topology with classical 50Hz traction transformer. The special tractiondrive topology for AC power systems consists of input high voltage trolley…
Fecha:	2011-06-17
Recurso:	Advances in Electrical and Electronic Engineering

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38.

The Possibility to Constitute an Interoperability of EFC in the Central and Eastern Europe
Pribyl, Pavel - Spalek, Juraj

Formato:	,
Enlaces:	The article describes critical situation concerning implementation of the EFC satellite oriented system in CEEC countries. Situation in the field of practical implementation of GNSS/CN is very critical at present due to lack of valid European standards. There is only…
Fecha:	2011-06-17
Recurso:	Advances in Electrical and Electronic Engineering

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39.

Reduction of Harmonics by 18-Pulse Rectifier
Kocman, Stanislav - Styskala, Vitezslav

Formato:	,
Enlaces:	Operation of such electrical devices as data processing and electronics devices, adjustable speed drives or uninterruptible power supply can cause problems by generating harmonic currents into the network, from which they are supplied. Effects of these harmonic currents are various,…
Fecha:	2011-06-17
Recurso:	Advances in Electrical and Electronic Engineering

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40.

Design and Realization of Laser Diode Power Supply
Svarny, Jiri

Formato:	,
Enlaces:	Under the terms of development of specialized system for transmissions of analogue high frequency signals by means of optical fibres, the source of coherent infrared radiation has been designed and manufactured. The source has to excite Mach–Zehnder type external intensity…
Fecha:	2011-06-17
Recurso:	Advances in Electrical and Electronic Engineering

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41.

Numerical Modelling of Electromagnetic Field in a Tornado
Fiala, Pavel; Brno University of Technology - Jirku, Tomas - Kriz, Tomas

Formato:	,
Enlaces:	This study deals with the numerical model of both the physical and the chemical processes in the tornado. Within the paper, a basic theoretical model and a numerical solution are presented. We prepared numerical models based on the combined finite…
Fecha:	2011-06-17
Recurso:	Advances in Electrical and Electronic Engineering

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42.

Security of Information Flows in Transport, as an Important Item of Crisis Management within Transport Systems
Mikulski, Jerzy; Silesian University of Technology, Katowice - Dziula, Przemyslaw

Formato:	,
Enlaces:	The article describes main aspects concerning security of information exchanged within transport systems. Definition of critical infrastructure and main matters coming out of fact transport systems are included in there, have been specified. The paper is also showing possibilities and…
Fecha:	2011-06-17
Recurso:	Advances in Electrical and Electronic Engineering

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43.

Numerical Modelling of the Special Light Source with Novel R-FEM Method
Fiala, Pavel; Brno University of Technology - Kroutilova, Eva; Brno University of Technology - Kriz, Tomas; Brno University of Technology

Formato:	,
Enlaces:	This paper presents information about new directions in the modelling of lighting systems, and an overview of methods for the modelling of lighting systems. The novel R-FEM method is described, which is a combination of the Radiosity method and the…
Fecha:	2011-06-17
Recurso:	Advances in Electrical and Electronic Engineering

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44.

Experiments with the Effect of Non-Homogenous Parts into Materials
Fiala, Pavel; Brno University of Technology - Kroutilova, Eva; Brno University of Technology - Steinbauer, Miroslav; Brno University of Technology - Dohnal, Premysl; Brno University of Technology - Hadinec, Michal; Brno University of Technology - Bartusek, Karel; Institute of Scientific Instruments of the ASCR

Formato:	,
Enlaces:	The article describes possibility of the deformity magnetic field numerical modeling into surroundings of the measured dia – paramagnetic specimens. This deformation study is given for the purposes MR measuring, where MR images are deformed from the point of view…
Fecha:	2011-06-17
Recurso:	Advances in Electrical and Electronic Engineering

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45.

Experiments with Accuracy of the Air Ion Field Measurement
Fiala, Pavel; Brno University of Technology - Steinbauer, Miroslav; Brno University of Technology - Bartusek, Karel; Institute of Scientific Instruments, Academy of Sciences of the Czech Republic - Szabo, Zoltan; Brno University of Technology

Formato:	,
Enlaces:	This article presents the capability of methods for measuring of the air ion concentration and principles of ion spectral analysis methods. The analysis of the electric state of air shows the presence of various ion sorts. The therapeutic effect of…
Fecha:	2011-06-17
Recurso:	Advances in Electrical and Electronic Engineering

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46.

PROMETHEE Method and Sensitivity Analysis in the Software Application for the Support of Decision-Making
Moldrik, Petr - Gurecky, Jiri - Paszek, Leopold

Formato:	,
Enlaces:	PROMETHEE is one of methods, which fall into multi-criteria analysis (MCA). The MCA, as the name itself indicates, deals with the evaluation of particular variants according to several criteria. Developed software application (MCA8) for the support of multi-criteria decision-making was…
Fecha:	2011-06-17
Recurso:	Advances in Electrical and Electronic Engineering

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47.

Risk Analysis of Safety-Critical Control Systems
Rastocny, Karol; University of Zilina

Formato:	,
Enlaces:	This paper deals with problems associated with risks analysis of a safety-critical control system. In the paper there are introduced recommendations enabling practical enforceability of risk analysis by the assurance of sufficient objectivity level. In the initial phases of the…
Fecha:	2011-06-17
Recurso:	Advances in Electrical and Electronic Engineering

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48.

Determination of Criteria Weights in Terms of Computer Software
Paszek, Leopold - Gurecky, Jiri - Prokop, Lukas

Formato:	,
Enlaces:	This article takes down the knowledge with determination of criteria weights in the terms of computer software of superconductive materials. This software relieves processing of considerable enters data. The criteria of the weights were determinated by Fuller triangle and Saaty´s…
Fecha:	2011-06-17
Recurso:	Advances in Electrical and Electronic Engineering

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49.

On Nanometer Ordering in thin Amorphous Hydrogenated Silicon
Mullerova, Jarmila - Vavrunkova, Veronika - Sutta, Pavol

Formato:	,
Enlaces:	We investigated thin films of amorphous hydrogenated silicon (a-Si:H) deposited by PECVD under increasingdilutions of silane plasma by hydrogen. We found out that under increasing additional hydrogen at the depositions, thin filmsobtain less hydrogen bonded to silicon. The optical band…
Fecha:	2011-06-17
Recurso:	Advances in Electrical and Electronic Engineering

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50.

Common Protocol for Distributed Network File System
Peniak, Peter - Kallay, Fedor

Formato:	,
Enlaces:	Paper deals with common protocol for distributed network file system. Focus is on CIFS protocol from Microsoft, the enhanced version of Microsoft Server Message Block (SMB), that is proposed as possible common solution for file sharing among distributed systems. There…
Fecha:	2011-06-17
Recurso:	Advances in Electrical and Electronic Engineering