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Comparison of conventional CT and VT with current and voltage sensors
Dvořák, Petr ; Drápela, Jiří (referee) ; Orságová, Jaroslava (advisor)
The diploma thesis deals with conventional transformers and current and voltage sensors. The first half of thesis describes mainly the basic concepts and accuracy classes of these converters used in electrical substations. The emphasis is given primarily on the differences. In the second half of thesis is presented an exact type of converters, which are installed in the substation Medlánky. There is an analysis of measured data from long – term monitoring from this substation and comparing the results from conventional transformers compared to the results from more modern sensors.
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Classifications in the construction industry, their development and use
Vydrová, Michaela ; Dvořák, Jiří (referee) ; Nový, Martin (advisor)
The theoretical part of the bachelor´s thesis discusses the importance of classification in construction. It describes the historical development and the importance of classification in the construction industry. Monitors use classifications and classifications in practice and use in the Czech legislation. The practical part deals with specific examples of classification of buildings and construction work. Part of the work is concerned with finding house prices in a period other than the planned construction.
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Converters for HVDC Energy Transmission
Martinec, Roman ; Klíma, Bohumil (referee) ; Červinka, Dalibor (advisor)
The aim of this thesis is to introduce the high-voltage direct current (HVDC) systems used in the world today. The work lists the basic principles of connection between individual HVDC stations, as well as the configuration of the HVDC transmission link. In addition, the work describes the topologies of converters currently in use and also their principal semi-conductor components. In the conclusion of the thesis, the HVDC technology is assessed, including its advantages and drawbacks.
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Matlab models of DC/DC converters with transformer
Michalík, Martin ; Knobloch, Jan (referee) ; Pazdera, Ivo (advisor)
The aim of the Bachelor thesis was getting in touch with standard topologies of DC/DC converters with transformer, their realization in programming environment Matlab/Simulink with usage of Simscape library and processing the results of simulations. Part of work is given to theory of transformers and design of transformers model, which is important part of every DC/DC converter with transformer. Model of transformer is based on theoretical background and functionality is checked up by reference model. The main part is aimed to enlighten functionality of different variety of DC/DC converters with transformer, creating their models in programming environment Matlab/Simulink, simulate those models and process results of simulations.
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Comparison of conventional CT and VT with current and voltage sensors
Dvořák, Petr ; Drápela, Jiří (referee) ; Orságová, Jaroslava (advisor)
The diploma thesis deals with conventional transformers and current and voltage sensors. The first half of thesis describes mainly the basic concepts and accuracy classes of these converters used in electrical substations. The emphasis is given primarily on the differences. In the second half of thesis is presented an exact type of converters, which are installed in the substation Medlánky. There is an analysis of measured data from long – term monitoring from this substation and comparing the results from conventional transformers compared to the results from more modern sensors.
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Matlab models of DC/DC converters with transformer
Michalík, Martin ; Knobloch, Jan (referee) ; Pazdera, Ivo (advisor)
The aim of the Bachelor thesis was getting in touch with standard topologies of DC/DC converters with transformer, their realization in programming environment Matlab/Simulink with usage of Simscape library and processing the results of simulations. Part of work is given to theory of transformers and design of transformers model, which is important part of every DC/DC converter with transformer. Model of transformer is based on theoretical background and functionality is checked up by reference model. The main part is aimed to enlighten functionality of different variety of DC/DC converters with transformer, creating their models in programming environment Matlab/Simulink, simulate those models and process results of simulations.
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Converters for HVDC Energy Transmission
Martinec, Roman ; Klíma, Bohumil (referee) ; Červinka, Dalibor (advisor)
The aim of this thesis is to introduce the high-voltage direct current (HVDC) systems used in the world today. The work lists the basic principles of connection between individual HVDC stations, as well as the configuration of the HVDC transmission link. In addition, the work describes the topologies of converters currently in use and also their principal semi-conductor components. In the conclusion of the thesis, the HVDC technology is assessed, including its advantages and drawbacks.
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Switched laboratory power source
Divílek, Petr ; Havlíček, Tomáš (referee) ; Pavlík, Michal (advisor)
The main aim of this work is to provide an overall summary of the problem of switched power supply. The stepwise description of the circuit components and their functions explains the way how the switching power supplies work. Bachelor thesis is focused on description, simulation and design of switching power supply powered by current PC of the ATX resource, where 12 V is used.
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Classifications in the construction industry, their development and use
Vydrová, Michaela ; Dvořák, Jiří (referee) ; Nový, Martin (advisor)
The theoretical part of the bachelor´s thesis discusses the importance of classification in construction. It describes the historical development and the importance of classification in the construction industry. Monitors use classifications and classifications in practice and use in the Czech legislation. The practical part deals with specific examples of classification of buildings and construction work. Part of the work is concerned with finding house prices in a period other than the planned construction.
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