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Current source for the switchgear thermal test
Košíček, Jiří ; Huták, Petr (referee) ; Patočka, Miroslav (advisor)
This thesis describes the design of semiconductor source for laboratory measurements of switchgears. The proposed source is able to use 16-250Hz frequency, fulfilling the standard value of voltage and current distortion. There are explained the theoretical knowledge of various types of inverters without transformer in the thesis. Furthermore, a circumferential proposal of source is made, which includes calculating the desired properties of individual components, their choice from offers from various manufacturers, and subsequently is constructed the total design solution. It is described the control and management of designed source and it is evaluated for the function finally.
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Small Hydropower Plant Project
Košíček, Jiří ; Šlezingr, Jan (referee) ; Radil, Lukáš (advisor)
This bachelor thesis consists of a description of the legislative framework of small hydropower plants, which is necessary to know for their operation and construction. It also describes the general theory of small hydropower plants, specifically describes the individual technical elements - weir, gratings, sluice gates, ambushes, sand traps and stones, open flume, pipes and stilling basin. Another part assesses the economic feasibility of small hydropower plants for specific hydrological conditions and design of turbines on suitable work flow. The main part is devoted to specific proposal small hydropower plants in the village Tulešice by the river Rokytná.
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Vliv korupce na příliv zahraničních investic v rámci vybraných států
Košíček, Jiří
Main goal of the bachleor thesis is to evaluate mutual relation between corruption and foreign direct investments within selected states in the period 1999-2018. The theoretical part of thesis deals with problematics of corruption in tranistion and developed coutries and also with foreign investments. For the purpose of the-sis, I choosed standard deviation for detecting how corruption, represented by corruption perception index affects arrival of foreign investments to choosen countries.
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Small Hydropower Plant Project
Košíček, Jiří ; Šlezingr, Jan (referee) ; Radil, Lukáš (advisor)
This bachelor thesis consists of a description of the legislative framework of small hydropower plants, which is necessary to know for their operation and construction. It also describes the general theory of small hydropower plants, specifically describes the individual technical elements - weir, gratings, sluice gates, ambushes, sand traps and stones, open flume, pipes and stilling basin. Another part assesses the economic feasibility of small hydropower plants for specific hydrological conditions and design of turbines on suitable work flow. The main part is devoted to specific proposal small hydropower plants in the village Tulešice by the river Rokytná.
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Current source for the switchgear thermal test
Košíček, Jiří ; Huták, Petr (referee) ; Patočka, Miroslav (advisor)
This thesis describes the design of semiconductor source for laboratory measurements of switchgears. The proposed source is able to use 16-250Hz frequency, fulfilling the standard value of voltage and current distortion. There are explained the theoretical knowledge of various types of inverters without transformer in the thesis. Furthermore, a circumferential proposal of source is made, which includes calculating the desired properties of individual components, their choice from offers from various manufacturers, and subsequently is constructed the total design solution. It is described the control and management of designed source and it is evaluated for the function finally.
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