|
|
Evaluation of possibilities for voltage control in a LV distribution network
Bolgár, Robert ; Drápela, Jiří (referee) ; Topolánek, David (advisor)
This paper deals with possible ways of voltage regulation. Theoretical part includes a search of published methods and the available voltage regulators. Acquired theoretical knowledge has been applied in the development of mathematical models of two selected controllers applied to the testing network. The result of this work is a summary of the outcomes of dynamic simulations with two selected regulators at various locations in testing network. Comparing the results of dynamic simulation for two selected states was chosen the most appropriate regulator and its optimal location in testing network.
|
|
| |
|
|
Digital controlled dc current source
Miškařík, Vít ; Mišurec, Jiří (referee) ; Vrba, Kamil (advisor)
This bachelor thesis aims to get acquainted with the issue of numerically controlled current sources, individual parts of them, their design options and comparison of the properties of these design options. In this thesis the individual parts needed to construct a numerically controlled DC current sources are analyzed and described, there are their main design relationships and possible achieved accurancy too. In next part there are described selected design options and calculation values of circuit elements. In conclusion there is presented the final schematic of whole source, result of computer function si- mulation, PCB design and measured parameters of really built circuit of numerically controlled current source.
|
|
|
Thermal dissipation optimization of LED Driver devices NCV78964 and NCV78925
Rejthar, Martin ; Boušek, Jaroslav (referee) ; Prokop, Roman (advisor)
Thesis is aimed at automotive DC/DC convertor analysis. It introduces categories of DC/DC convertors by their architecture. Converters are then divided to step-up and step-down. Later the types of power losses are introduced. Theory is closed with thermal design rules and cooling of integrated circuits. After basic convertor analysis, one specific Integrated Circuit is described in more detail. Especially its principles of operations and this IC is used in an evaluation board. Thesis predicts the thermal parameters of modules and these results are compared with measured data, acquired on modules, that were designed too.
|
|
|
Thermal dissipation optimization of LED Driver devices NCV78964 and NCV78925
Rejthar, Martin ; Boušek, Jaroslav (referee) ; Prokop, Roman (advisor)
Thesis is aimed at automotive DC/DC convertor analysis. It introduces categories of DC/DC convertors by their architecture. Converters are then divided to step-up and step-down. Later the types of power losses are introduced. Theory is closed with thermal design rules and cooling of integrated circuits. After basic convertor analysis, one specific Integrated Circuit is described in more detail. Especially its principles of operations and this IC is used in an evaluation board. Thesis predicts the thermal parameters of modules and these results are compared with measured data, acquired on modules, that were designed too.
|
|
|
Digital controlled dc current source
Miškařík, Vít ; Mišurec, Jiří (referee) ; Vrba, Kamil (advisor)
This bachelor thesis aims to get acquainted with the issue of numerically controlled current sources, individual parts of them, their design options and comparison of the properties of these design options. In this thesis the individual parts needed to construct a numerically controlled DC current sources are analyzed and described, there are their main design relationships and possible achieved accurancy too. In next part there are described selected design options and calculation values of circuit elements. In conclusion there is presented the final schematic of whole source, result of computer function si- mulation, PCB design and measured parameters of really built circuit of numerically controlled current source.
|
|
| |
|
|
Evaluation of possibilities for voltage control in a LV distribution network
Bolgár, Robert ; Drápela, Jiří (referee) ; Topolánek, David (advisor)
This paper deals with possible ways of voltage regulation. Theoretical part includes a search of published methods and the available voltage regulators. Acquired theoretical knowledge has been applied in the development of mathematical models of two selected controllers applied to the testing network. The result of this work is a summary of the outcomes of dynamic simulations with two selected regulators at various locations in testing network. Comparing the results of dynamic simulation for two selected states was chosen the most appropriate regulator and its optimal location in testing network.
|
|
|
Analysis of economy and conditions of electricity production by small water energy power station operator and solar-energy operator
Šíma, Ondřej ; Zeman, Karel (advisor) ; Petrášek, František (referee)
Production of electricity from renewable energy sources is very actual in present period by reason of badly adjusted parameters for future development in the area of renewable energy sources. These wrong economical decisions - inadequate financial support of the state, caused large development firstly of solar-energy power stations which has the consequence of raising of electricity price what negatively influences the end-customers, state budget and the whole national economy too. Interest of the topic emphasizes family ownership of two renewable manufacturing resources of electricity -- small water power station and solar-energy power station. In the theoretical part will be at first described all notions of relevance which refer to chosen topic, especially from area of economy, accountancy and energy industry. Then it will be characterized production of electricity from renewable resources, principles and instruments to supporting production of electricity from renewable energy sources with its economic impacts to national economy of the Czech Republic. The analytical part will compare legal environment and ways of financial support of two concrete power stations producing the electricity from renewable resources, i. e. small water power station and solar--energy power station, thereout will come comparison of both projects in light of basic economic parameters which are monitored within economy. In fine of this part will be monitored parameters of both projects analysed and mutually compared. The aim of this Bachelor work is analysis and comparison of production of electricity at two concrete power stations producing electricity from renewable resources, i. e. small water power station and solar-energy power station.
|
|
| |
guest ::
