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Back-up power supply 230V/50Hz/300VA with a battery supply 12V
Snítilý, David ; Patočka, Miroslav (referee) ; Vorel, Pavel (advisor)
The aim of this project is to describe, design and create a converter from 12V DC to 230 VRMS. The power of this device is about 500W. The device consists of two main converters. The first one is step-up DC/DC converter and the other is DC/AC inverter. Step-up converter is designed as a resonant converter. It is useful for pushing down losses in semiconductors and inceasing efficiency. The inverter is changing DC voltage from the first converter to AC voltage. Control of this device is realized with DSP Motorola. This device should be used mainly for supply common devices up to 500W. Main usage is planed in a car or to another place where is not posible to connect some device to plug.
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Mathematical models of the transformers and asynchronous machines
Cipín, Radoslav ; Běloušek, Josef (referee) ; Patočka, Miroslav (advisor)
The fist part of this work is dealt with the construction of the mathematical models of voltage and current transformers. There are created and simulated models of voltage and current transformer with the nonlinear magnetization characteristics. The second part of this work is dealt with equivalent circuit of the induction motor in the form of Gamma-circuit. The speed-torque characteristic and the dependence of stator current on the slip are calculated from this equivalent circuit. The third part of this work is dealt with electromagnetic design of the alternating current machines by the help of a classic way and a new way.
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High power traction converters
Žižka, Pavel ; Vorel, Pavel (referee) ; Patočka, Miroslav (advisor)
This master thesis is based on realization of the previous university project, design of locomotive reconstruction and solving accompanying problems. In this thesis there are described all parts of a converter. The end of thesis involved theory about driver circuits of power transistors IGBT. Nowadays is still more often to think about reconstruction of the old technology rather than design a complete new construction. Investors take this decision from the financial reasons and because to the old technology designer can add only the converter. In this instant we talk about electrical locomotive, there should be kept a supply transformer and a driving unit (DC engine). The aim of this thesis is to design the converter between these two basic parts. The converter must taking the quasi-sinusoidal current which is in the phase with the input voltage, also must be able to control the engine and recuperate energy back to the network. For realization of these conditions, the converter must contain the active rectifier working in the DC-link and from which the step-down DC/DC converter is fed. Converter output is connected to the driving unit. The digital control of the power transistors is provided by processor MOTOROLA DSP56F. The control impulses, switching the power transistors, go through the driver circuits to transistors. All problems are described in the following text.
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Street reconstruction B.J.Krawce in Chocen
Jetmar, Jiří ; Patočka, Miroslav (referee) ; Smělý, Martin (advisor)
The aim of this thesis is to design road reconstruction in the street Bj. Krawce in the municipality Choceň, which is newly designed as Zone 30. Appropriate width layout and provision a sufficient amount of parking spaces are designed for local residents with regards to the impact on the environment. Furthermore calming traffic flowis using calming elements (speed bumps).
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Modifying the bus station in the Moravska Trebova
Beneš, Petr ; Patočka, Miroslav (referee) ; Smělý, Martin (advisor)
The content of bachelor thesis is adjustment of current bus station including existing indeterminate paved surfaces designed for spontaneous parking in its surroundings. Thesis includes adjustment roads for pedestrian traffic, wich increases its security and construction a new surfaces of green areas for restoration environment of the bus station.
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Street reconstruction of Prokop Veliký in Vysoké Mýto
Andrle, Tomáš ; Patočka, Miroslav (referee) ; Smělý, Martin (advisor)
The aim of my thesis is reconstruction of Prokop Veliký street in Vysoké Mýto.Desing should solve streamlining of roads including the connection to the side roads. Along the road there should be designed parking spaces, pedestrian crossings and places for crossing including barrier-free modifications. The separation of sidewalk from the traffic lane by the green belt will be preserved.
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Progress report on the project VIII/2013 Quality Assessment HM and geotechnical exploration plan for the construction of underground gas storage Milasín-beech - List of works on the project and an evaluation of the results for the third quarter of 2013
Souček, Kamil ; Koníček, Petr ; Vavro, Martin ; Staš, Lubomír ; Ptáček, Jiří ; Vavro, Leona ; Waclawik, Petr ; Georgiovská, Lucie ; Patočka, M.
Based on Contract No. G1042011 with the client fy DIAMO state enterprise Stráž, branch GEAM Lower Rožínka was prepared this interim report, which summarizes the list of works, presents and assesses the findings and results for the period July to September 2013, concerning the evaluation of rock mass quality and geotechnical survey was intended to build an underground gas storage facility.
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Progress report on the project VI/2013 Quality Assessment HM and geotechnical exploration plan for the construction of underground gas storage Milasín - Bukov - List of works on the project and an evaluation of the results for the first quarter of 2013
Souček, Kamil ; Koníček, Petr ; Vavro, Martin ; Staš, Lubomír ; Ptáček, Jiří ; Vavro, Leona ; Waclawik, Petr ; Georgiovská, Lucie ; Patočka, M.
Based on Contract No. G1042011 with the client fy DIAMO state enterprise Stráž, branch GEAM Lower Rožínka was prepared this interim report, which summarizes the list of works, presents and assesses the findings and results for the period January-March 2013, concerning the evaluation of rock mass quality and geotechnical survey was intended to build an underground gas storage facility.
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Progress report on the project VII/2013 Quality Assessment HM and geotechnical survey for construction of an underground gas storage Milasín - Bukov - List of works on the project and the achieved results for the second quarter of 2013
Souček, Kamil ; Koníček, Petr ; Vavro, Martin ; Staš, Lubomír ; Ptáček, Jiří ; Vavro, Leona ; Waclawik, Petr ; Georgiovská, Lucie ; Patočka, M.
Based on Contract No. G1042011 with the client fy DIAMO state enterprise Stráž, branch GEAM Lower Rožínka was prepared this interim report, which summarizes the list of works, presents and assesses the findings and results for the period April-June 2013, on the evaluation of rock mass quality and geotechnical survey was intended to build an underground gas storage facility.
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