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Monitoring of photovoltaic power plant Brumovice
Šumberák, David ; Knobloch, Jan (referee) ; Pochyla, Martin (advisor)
The Bachelor thesis deals with monitoring of photovoltaic power plant with nominal performance 3,075 MW. The first part describes the principle of photovoltaic conversion of solar energy, summarizes the principles of the photovoltaic phenomena, current trends and promising options. The following part of thesis an introduction to photovoltaic power plant in Brumovice, it is her monitoring and determining the efficiency. In the last part metod of calculating return power plant is describes.
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DC/DC converter 2,5kW/1500A for resistive heating of iron components
Martiš, Jan ; Knobloch, Jan (referee) ; Vorel, Pavel (advisor)
This thesis deals with the design and construction of a single-phase switching power supply, which is intended for direct resistive heating of iron components. The power supply is especially intended for resistive heating of horse-shoes. The supply is able to deliver an output current of up to 1500 A at a power of up to 2500 W. The first part of this work deals with the design of individual parts of the unit, the second part is focused on construction and testing of the supply and the last part contains technical documentation. The power supply was successfully tested and the required output parameters were met. However some problems do exist, especially with overheating of the output rectifier and with contacting the heated component to the output leads of the supply. These problems will be discussed in the work. The power supply can be used as an alternative solution to classic means of iron heating. The methods and ideas presented in this work can be applied in a design of a similar power supply with high output current, but most of the design rules are valid generally for the given topology.
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Iverter for three-phase motor
Mikuška, Martin ; Červinka, Dalibor (referee) ; Knobloch, Jan (advisor)
This master’s thesis goes into design of particular circuits for three phase inverter. Inverter’s control is ensured by digital signal controller MC56F8013 with his program. Principle of control is suggested for individual motors. Inverter design considerate universal use and capability for any three phase motor. Particular blocks are compatible each other.
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Application of the Simatic control system for the packaging machine control
Urbánek, Tomáš ; Mišinger, Lukáš (referee) ; Knobloch, Jan (advisor)
Masters thesis deals with the SIMATIC, which is the process control system from Siemens. Simatic belongs to the group of so-called programmable logic controllers (English Programmable Logic Controller). It is a microcomputer that processes the instructions in real time. I have designed a control algorithm and HMI visualization in my Masterś thesis. Moreover,my attention is focused on PLC S7 - 300. The S7-313C is used for implementations. The proposed solution has been tested and operated in real conditions
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Compact inverter for DC motor
Kvapil, Martin ; Knobloch, Jan (referee) ; Procházka, Petr (advisor)
This master thesis deals project and realization of universal transistor converter for power electronics course. For this converter was at the same time designed control circuit and drive circuit. Next part is about the design of compact converter for DC. This converter is controlled by a microprocessor Freescale.
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Concept of linear motors measurement workplace
Knobloch, Jan ; Červinka, Dalibor (referee) ; Klíma, Bohumil (advisor)
Master’s thesis handles about measurement on linear motors. Acts about set of two linear machines on one rail. One is motor and second is load. Thesis paies their mathematical description, control and measurement. It’s made measurement of the linear motor load characteristic. Next measurement have to do with losses in the converter. Is chosen measuring instrument t for measurement during working cycle. During working cycle has determine power eciency of entire drive.
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The development and the prespective of the mobile connectivity in Czech Republic
Fialová, Ivana ; Toman, Prokop (advisor) ; Knobloch, Jan (referee)
Tématem této práce je mobilní připojení k internetu v České republice. Jsou rozebrány jednotlivé technologie, které umožňují tento typ připojení. Mezi nejstarší patří GPRS spolu se svou technologickou nadstavbou EDGE (někdy zvanou také eGPRS). Nejnovější technologií připojení je UMTS, které se stává středem zájmu jak operátorů, tak uživatelů (jde zatím o nejrychlejší možnost mobilního připojení v České republice). Práce dále hodnotí srovnání nabídek jednotlivých operátorů v České republice (bráno s ohledem na stav v květnu 2006). Při porovnání bere v potaz finanční stránku připojení a územní dostupnost. Výhledy mobilního připojení v rámci České republiky jsou odvozeny z dosavadního vývoje, stavu ve světe a aktuálních ohnisek zájmu vědců.
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