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Off-line supply source 15 V / 1.5 A with a galvanic separation for a laboratory equipment
Pokorný, Vladimír ; Tománek, Radek (referee) ; Vorel, Pavel (advisor)
This bachelor's thesis deals with the design of a single-acting switching power supply for a laboratory equipment. The required parameters of the source are input voltage 230 V and frequency 50 Hz, output DC voltage 15 V, and output current at least 1.5 A. The introduction of this thesis briefly describes the operation of flyback converters. The next part is focused on the design of the high-frequency transformer and the main power part. The work continues with the designing of power components and heatsinks. The following part is the design of the control part, which will use an integrated circuit from the UC384x family, and the construction of the power supply. The conclusion of the thesis focuses on the source debugging and verification measurements.
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Models of DC transistor converters in Simulink program
Loup, Martin ; Pazdera, Ivo (referee) ; Huták, Petr (advisor)
The master’s thesis is focused on the creation of models of DC/DC converters and control program for input parameters and their configuration. The first part is theoretical and she is dedicated to the description of the program Matlab. The second chapter is dedicated to DC/DC converters. Their function is described there and the necessary equations for the design are derived. All of this is complemented by the calculation of line losses in semiconductor elements and the design of voltage and current regulator. The last two parts deal with the description of the created models in Simulink and control program in a graphical environment. The created program is able to edit and recalculate parameters of the converters, calculate line losses on semiconductor components, perform a model simulation or open it.
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Templates of DC/DC Converters
Skoupý, Petr ; Kubíček, Michal (referee) ; Šebesta, Jiří (advisor)
The aim of this thesis is a suggestion and a realization of universal DC/DC convertor with three chips. The first part of this work is focused on the progressive analysis of the power and control part, as function blocks and diagrams. The greatest emphasis is placed on the three circuit wiring for step-down, step-up and inverting convertor. It was necessary to choose the right control circuit, which is available on the market and fulfil all our requirements. Progressive analysis of outer peripheral parts calculations and selecting for the convertor with specific parameters and load characteristic and creation of universal PCB with shouldering is the final realization.
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Portable digitally controlled stabilized source of symmetrical voltage
Hynek, David ; Drexler, Petr (referee) ; Mikulka, Jan (advisor)
This thesis deals with a design of a power supply for a measuring equipment for a geophysical mapping intended to do a reconstruction of an electrical impedance of a ground environment of water reservoirs. The power source is going to be used for laboratory measurements and for outdoor experiments. The thesis describes the selection of suitable components, equipment design and testing. The theoretical part explains the functions of used components and the principle of an electrical impedance tomography. The conclusion summarizes the properties of the proposed solution and evaluates the final product.
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Inverter for DC motor 800 W
Němec, Petr ; Toman, Marek (referee) ; Procházka, Petr (advisor)
The goal of this Bachelor´s thesis is design of an power inverter for BDC motor 36 V/800 W with permanent magnets. The first part of this work is devoted to the brief description of drive elements, which with designed converter create drive system. It´s also contain measures of used BDC motor MY1020. In the second part there is a outline description of functions and connection of DC/DC converters with respect to the final solution. The power circuit will be built with the MOS-FET IRFP4110 connected to the H bridge. Transducer control logic will be provided by the microcontroller development board Arduino UNO 3 with the integrated driver circuit IR2110.
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Design of synchronous switched-mode power supply for automotive
Sedlák, Jakub ; Šebesta, Jiří (referee) ; Kubíček, Michal (advisor)
This bachelor´s thesis deals with the DC/DC convertors and their application in automotive lighting. In first part of thesis, there are mentioned DC/DC convertors, their basic topologies and synchronous rectification. In next part of thesis, there are compared selected integrated circuits, which are suitable for this application. For one of these circuits is created a design. For this design was created a simulation to find out, that design is working. This design was realized and was tested according to automotive standards. In the end, there is a working DC/DC convertor, which meets requirements and basic limits from automotive standarts.
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Off-line supply source 15 V / 1.5 A with a galvanic separation for a laboratory equipment
Pokorný, Vladimír ; Tománek, Radek (referee) ; Vorel, Pavel (advisor)
This bachelor's thesis deals with the design of a single-acting switching power supply for a laboratory equipment. The required parameters of the source are input voltage 230 V and frequency 50 Hz, output DC voltage 15 V, and output current at least 1.5 A. The introduction of this thesis briefly describes the operation of flyback converters. The next part is focused on the design of the high-frequency transformer and the main power part. The work continues with the designing of power components and heatsinks. The following part is the design of the control part, which will use an integrated circuit from the UC384x family, and the construction of the power supply. The conclusion of the thesis focuses on the source debugging and verification measurements.
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