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Thermal calculation of induction motor using thermal networks
Čáp, Martin ; Cipín, Radoslav (referee) ; Toman, Marek (advisor)
This thesis deals with thermal calculation of asynchronous motor. The theoretical part deals with principles of heat transfer, which are important for thermal calculation. Another theoretical part describes asynchronous motor analysis and its loss. In the practical part, these losses together with the electromagnetic circuit are calculated. Subsequently, two thermal networks are created to calculate the warming of individual machine parts. To ensure the correctness of the result, a bound model of partial calculations of the asynchronous machine is created. The next step is to compare the calculated electrical quantities and the calculated temperatures with respect to the measured values.
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New Administrative Building in Karviná, Construction Technological Project
Toman, Marek ; Patloka, Jiří (referee) ; Šlanhof, Jiří (advisor)
The diploma thesis deals with preparation, organization and construction technology of an administrative building in Karviná. It is about new building with four above ground floor. From a design point of view, the structure is designed as a precast concrete frame. The diploma thesis contains technical report, coordinating situation with design of transport ways, time financial plan, study of the implementation of the main technological phases, concept of construction site equipment, design of machinery set, time plan with worker bilancion, material delivery plan for rough building, technical report for masonry work, inspection and test plan for masonry work, item budget with the statement of measurements and noice study for earthworks.
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Impact of core length on efficiency of a small induction machine
Žalkovský, Antonín ; Toman, Marek (referee) ; Mach, Martin (advisor)
The bachelor’s thesis deals with design issues of small induction machine, analyze the effects of changing length of the magnetic circuit on its efficiency. The theoretical part describes structural components of induction motor and working principle. The practical part focus on calculation of equivalent model of assigned induction machine for determined range of magnetic circuit lengths and the number of conductors in the stator groove. Follows calculations of torque characteristic and current characteristic, calculation of losses in all parts of induction machine and determine the efficiency. Another part of thesis is aim at measurement of original induction motor and motor with lengthened magnetic circuit. The last part is focused on analysis and comparing the calculated values.
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Residental building in Olomouc - Slavonín, gross upper structure
Toman, Marek ; Hanzelková, Martina (referee) ; Šlanhof, Jiří (advisor)
The bachelor thesis deals with technology of gross upper structure of residental building in Olomouc – Slavonín. The thesis contains technical report, technological regulation for monolithic support structure, technical report of construction site equipment, design of machinery set, inspection and test plan, measure to safety and health protection, time plan, budget including the quantity of materials and design of traffic roads.
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Controllable Current Source for High Power LEDs with the Use of Arduino Platform
Čáp, Martin ; Škoda, Jan (referee) ; Toman, Marek (advisor)
This bachelor thesis deals with regulation of brightness power LED diodes and design of the control circuits. Here is described how in environment Delphi to create an application to control PWM Arduino outputs. They are discussed linear and switching current source. Also are described specialized switching power supplies to power the LEDs. The aim of this work is the design, realization and comparison of linear power supply, switching source assembled with the TL494 and integrated switchied current source TPS92513.
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AC voltage converter
Bérceš, Erik ; Procházka, Petr (referee) ; Toman, Marek (advisor)
The bachelor’s thesis deals with an AC voltage converter with an input voltage Uin = 50 V and output current Iout = 5 A controlled by the processor Arduino. The assignment concentrates on theoretical knowledge of the AC voltage converter, phase control of triac and on the semiconductor devices which are its main components. The main task of the thesis is proposition and realization of an AC voltage converter which will be used for the laboratory work in the Power Electronics course. The thesis contains software which enables controlling the converter as well as verifying its functionality.
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Camera Positioning Device
Berčík, Vojtěch ; Toman, Marek (referee) ; Červinka, Dalibor (advisor)
This master’s thesis deals with the design of a drive for a camera positioning device that could be used for shooting videos and timelapses. The optimal drive and power supply as well as the steering program based on the Arduino platform program are developed. The construction prototype adapted for printing at 3D printers is also designed. The whole system is then produced and tested.
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Constrained modeling of induction motor using physical modeling
Toman, Marek ; Huzlík, Rostislav (referee) ; Vlach, Radek (advisor)
This paper deals with interaction of different physical phenomena in asynchronous motor. The first part of this work is devoted to computing of electrical ratios in asynchronous motor. By using the equivalent circuit in the shape of Gamma-circuit the equation for computing of currents, performances and losses of asynchronous motor are derived. The second part describes calculating of electromagnetic circuit and iron-core losses. In the next part there is the first part of associated model created which respects electric and electromagnetic ratios in the asynchronous motor. This model can be used for example to pursuance of variation of flux density caused by resizing load. In this model the unconventional way of computing the magnetizating inductance and resistance coresponding to iron-core losses is used. The next part deals with calculation of machine warming using the thermal network. In the last part there is a complete coupled model assembed which respects the interaction of electrical, electromagnetical and thermal ratios of induction machine.
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Design of Chimney Effect Control
Toman, Marek ; Vejlupek, Josef (referee) ; Vlach, Radek (advisor)
This paper talks about problematics of excessive chimney draft. In the first part of the thesis the possibilities of chimney draft adjustability are summarized. Subsequently, a mathematical model, which describes the behavior of the chimney as a dynamic system, is built. Then a simple production control unit development is described. This control unit si designed to control the chimney draft. The main goal of this work is to design and manufacture electronic control based on the dsPIC microcontroller.
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