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Anodic bonding of sandwich structures
Urbánek, Petr ; Kosina, Petr (referee) ; Pekárek, Jan (advisor)
This master thesis deals with the technology anodic soldering. It focuses mainly on soldering sandwich glass-silicon structures. Describes the soldering method and highlights its advantages. Theoretically discusses the different methods used soldering these structures and assess their possible benefits. This work explores practical ways possible soldering methods on a particular device. These different soldering methods evaluated on the basis of achieved quality connections. This thesis examines the anodic soldering at low temperatures, while there are demands on the shortening of the technological process.
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Laboratory power supply
Říha, Pavel ; Petržela, Jiří (referee) ; Götthans, Tomáš (advisor)
This bachelor's thesis deals with design, simulation and realization of a prototype of regulated laboratory power supply with adjustable current protection by potentiometers with measuring and displaying the output voltage and current using a microprocessor and LCD display with adjustable voltage range of 0 - 30V and current 0-3A. The thesis also includes design of power transistor cooling and the results of testing functional prototype.
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Control of water supply for a house
Chvátal, Michal ; Richter, Miloslav (referee) ; Macho, Tomáš (advisor)
The diploma thesis deals with the design and implementation of the system that will control the water supply for the family house and its garden. The system aslo allows you to store a history that can be viewed via the web interface. The web interface also allows you to set system parameters and monitor the current status.
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Switched power supply testbench
Zatloukal, Tomáš ; Bohrn, Marek (referee) ; Pavlík, Michal (advisor)
The following work deals with a design of power supply testbench with design of their replaceable modules and circuits for their measurement. The final product should be used for faster design and tuning of switching power supplies. In this essay, there is detailed description of switching power supplies, analysis of support circuits and calculations for design. Based on theoretical background and selected parameters, a connection concept will be created. This concept will be validated by a device that will consist of main board, changeable modules and measurement circuits.
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Model of synchronous PM machine based on equivalent reluctance network
Sporni, Peter ; Lapčík, Josef (referee) ; Ondrůšek, Čestmír (advisor)
Táto práca pojednáva o problematike vytvárania a simulácie reluktančnej sieti synchrónneho stroja s V tvarovanými permanentnými magnetmi v programe PSpice. Na začiatku sa oboznámime s konštrukciou a parametrami stroja a potom vyvodíme základné rovnice na výpočet každého prvku siete. Vypočítame každý prvok tohto stroja a potom vytvoríme túto sieť v PSpice. Na začiatku je simulovaná sieť statická a všetky magnetické odpory sú lineárne. Neskôr nahradíme lineárne odpory reprezentujúce plechy nelineárnymi a počítame s precovnou teplotou permanentných magnetov. Potom porovnáme naše výsledky s FEM metódou počítanými hodnotami a vypočítame indukované napätie v jednej cievke stroja. Na záver vypočítame výkonovú a momentovú charakteristiku stroja.
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Utilization of local systems for power system regulation
Kostov, Jiří ; Geschwinder, Lukáš (referee) ; Bartošík, Tomáš (advisor)
Bachelor’s Thesis deals general information about methods of regulation of elektrification systems, including basic principles of regulation of frequency, regulation of voltage and regulation of reactive and active power. Work includes information about aggregate remote control system, power plants that participate on regulation and self device for regulation and controlling of reactive power. Work engages on new options in section of regulation and his requirements for distribution sites. Part of work deals information about renewable natural energy sources and his requirements for distribution sites.
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Intelligent BMS for lithium batteries
Vašíček, Jakub ; Kazda, Tomáš (referee) ; Vyroubal, Petr (advisor)
This thesis is focused on design of electronic system called BMS, which is necessary for lithium batteries safety operation. The first part contains a brief description of lithium battery design. The following is an overview of the main parameters of this type of batteries. The next part describing various methods of state of charge (SoC) estimation and the ways to ensure uniform charge of each cell. Based on the theoretic analysis, the block diagrams for individual parts of BMS were designed. The following describing device assembly and design of control algorithm. The last part is devoted to measurement of achieved attributes. In conclusion, results of the work are discussed and possibilities of future improvements are suggested.
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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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