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Solid State Tesla Coil
Pařenica, Jakub ; Mikláš, Ján (referee) ; Martiš, Jan (advisor)
The bachelor's thesis focuses on a theoretical description of the operation of Tesla's transformer, its design, including electronics, and its subsequent construction. The basic theory of the transformer replacement scheme is described. The Tesla transformer is generally described, as well as the methods of excitation of the primary side of the transformer, the generation of the discharge, the skin effect and the meaning of resonance. Furthermore, the work describes the construction of the primary coil holder, secondary coil. The work contains a pattern of the power board from the Eagle program, and everything is accompanied by photos. The work describes the recovery procedure and describes all the waveforms that were measured before and after the connection of the secondary coil.
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Utilization of ANSYS Workbench program at power electrical engineering
Partl, Tomáš ; Aubrecht, Vladimír (referee) ; Kuchyňková, Hana (advisor)
In its first part this Master´s thesis describes creation of electronic database design in Raster Design 2009 program as an effective form of storage only for paper documentation. The second part of my thesis provides calculation of primary and secondary winding of current instrument transformer of over-current conduit through the winding and influence on other parts of transformer i.e. error of transformer or increasing magnetic induction core and others. The last third part is focusing on usage of ANSYS Workbench in power electrical engineering. The thesis shows specific example of warming of current instrument transformer (thermal analysis) and comparing the results with theoretical (calculated) values.
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Multi-Conductor Model of Communication over Outdoor Power Lines
Franek, Lešek ; Steinbauer, Miloslav (referee) ; Vozňák, Miroslav (referee) ; Fiedler, Petr (advisor)
PLC - power line communication is not new. It has been known for many years. But It never be used in massive scale. There were only sporadic applications, for example ripple control system HDO used in the Czechoslovakia. PLC currently experiencing a renaissance thanks to the advent of Smart Grid. PLC offering relatively low bit rates and relatively unreliable transmission, but these disadvantages compensates very low costs to build a communication infrastructure and it offers specific functionalities for Smart Grid. The question is whether the declared parameters will be met in the real world. This thesis tries to find an answer.
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Description Methods for Electrical Systems and Their Solving
Křižka, Jakub ; Němec, Zdeněk (referee) ; Šeda, Miloš (advisor)
The objective of bachelor thesis is a searching description of methods, which are usually used for calculation of circuit variable values in electric circuits. At the beginning is thesis concerning with description of individual components (power supplies, electronic components) used in electric circuits, then also with analysis of rules, which are the fundamental for a calculation of values in electronic circuit – Ohm’s rule and Kirchhoff’s rules. Indivisible part of thesis is also summary of special methods, such as method of loop currents (mesh analysis), method of nodal voltage (nodal analysis) etc. and their demonstration on examples of electric circuits. The structure of thesis is coursebook and gives successive summary of information in area calculations of electric circuits.
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Distance Practical Education of Electric Machines
Šelepa, Jan ; Huzlík, Rostislav (referee) ; Hájek, Vítězslav (advisor)
This work contains scheme of practical point of distance training in the field of electric machines. It consits of three parts nessesary for consistence of entire work. In first part we have a description of data networks used to communication with virtual laboratory. Further there is a list and description of software fit for our study. These are programs capable of controling measurements, e.g. . LabView, Control Web, TestPoint, ScopeWin etc. In second part we have selection of measurment experiment. As experiment i measured the effectivness of three-phase transformer. The values archieved during the experiment where recorded and processed into form of graph and tables. In last part i used processed results to create functional simulation of measurement using MS Excel software. Further i calculated characteristics for equivalent circuit diagram of the transformer, that where equivalent to the real values measured in laboratory.
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110/22 kV Transforming Substation Reconstruction
Kubiš, Petr ; Bátora, Branislav (referee) ; Macháček, Jan (advisor)
This thesis deals with the issue of reconstruction 110/22kV distribution substation in economic point of view, where we will assess the benefits of a combination of their involvement using the discounted cost. It’s necessary to reconstruct distribution substation due to the increasing demand for electricity, upgrading equipment in the distribution systems, improve the reliability of electricity supply to customers, etc.. Distribution substation layout must meet conditions resulting from a law on energetics and operation of primary distribution networks.
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Design of analog control device for mini glasshouse
Řehák, Martin ; Lukeš, Zbyněk (referee) ; Petržela, Jiří (advisor)
Nowadays there are several options how to grow plants that do not come from our climatic belts are used to implement the greenhouses, where the artificially simulated environments, in which plants can vegetate. This work deals with the issue, plant growing in climates that are not for the plants of the rainforest, characteristic. It was necessary to create a greenhouse in which to guarantee the basic conditions for their growth. Such as humidity, temperature and lighting. He was taken into account at the design and implementation of the website.
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Analysis of methods of measurement of fully-differential frequency filters
Kučera, Tomáš ; Kubánek, David (referee) ; Jeřábek, Jan (advisor)
This bachelor thesis is analysing methods of measuring of differential frequency-selection filters with usage of active elements especially in current mode. Firstly it describes techniques of scheme of differential frequency-selection filters in current mode and conversions of linkage from voltage to current mode. Next the thesis aims at methods of measuring of particular voltage converters to differential current and back from differential current to voltage, which are an integral part for measurements of differential frequency-selection filters in current mode. For verification of characteristics of solutions designed separately as well as in cascade with particular solvent of frequency-selection filter there were used simulation instruments SNAP and OrCAD there, chosen resolutions were constructed and its characteristics were checked during laboratory test.
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Vacuum tube headphone amplifier
Musil, Tomáš ; Kledrowetz, Vilém (referee) ; Háze, Jiří (advisor)
This Bachelor’s thesis deals with design and realization of vacuum tube headphone amplifier working in class A. There is a closer look into operating principals of vacuum tube, most common types, basic ways to use it in electronic circuit, designing stabilized power supplies and also realization of functional prototype and measuring it’s parameters.
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Design of vacuum tube compressor for audio signal processing
Valach, Ondřej ; Vrba, Kamil (referee) ; Koton, Jaroslav (advisor)
The seminar work deals with the problem of compressors and compressor LA2A in general. It discusses terms associated with the dynamics of the signal. The first part of the text is centred on the theoretical introduction, which discusses the concepts associated with the dynamic of signals. There is explained the principle of compression and parameters that are associated with this process. The second part is devoted purely to construction of the compressor, which is based on a well-known type LA2A. It describes its individual parts and their interrelation. At the end of the text it is proposed the idea of adding two features beyond the original LA2.
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