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Switching supply source 5,5kV/4,3kW with silicon-carbide semiconductors
Gabriel, Petr ; Patočka, Miroslav (referee) ; Vorel, Pavel (advisor)
This thesis is about to introduce the development of switched power supply with output voltage of 5,5 kV and power of 4,3 kW. This thesis directly follows the outputs of two previous semester projects. Main task is about to finish the development of remaining printed circuit boards and perform launching of all parts of developed power supply. Next necessary task is about to assemble a functional prototype of the supply using the developed parts, performing a series of measurement supply’s parameters and creating of technical documentation of mechanical part. There are all stages of supply’s development included in this thesis. From the first part, that describes various types of converters, through the design of all the supply’s parts, to final implementation of functional prototype. There are the results of measurement supply’s parameters at the end of this thesis.
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DC/DC converter 12V/300V
Žurek, Jan ; Hanák, Pavel (referee) ; Kubánek, David (advisor)
This Bachelor´s Thesis is about switch power supplies theory. It contains comparation with power supplies made of linear components and briefly describes principals of each type. Bigger attention is devoted to fly-back engagement, on which´s basic is then in practice designed particular switch power supply. All key components are counted, including initiation of important species interaction, especially of transformator, MOSFET semiconductor triode, output diode, and there are chosen important components, which are subsequently implemented into the particular switch power supply engagement. This blocking engagement turned out to be functionless. That was why I decided to use engagement called half-bridge, which was viable.
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Design of supply source with several outputs
Lačný, Radek ; Lattenberg, Ivo (referee) ; Novotný, Vít (advisor)
The main objective of this work is a design of supply power source with several outputs for a telephone subscriber module. This module consists of two parts. First one is a control block containing a processor and auxiliary circuits, which requires voltage +3.3 V and +5 V. The second part is a board with cards, which provides dual telephone line feeding each and the board requires voltage in the -24 and -75 V. Bachelor's thesis contains a brief description of the basic types of convertors used in switched power sources, then the design of required power supply for the subscriber module together with the draft printed circuits and also the alternative power sources based on commercial products available on the Czech market. The resulting electrical scheme of power supply, including the printed circuits board schemes are presented in the Annex of the thesis.
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Converters controling
Nevoral, Jiří ; Steinbauer, Miloslav (referee) ; Fiala, Pavel (advisor)
Bachelor´s project is study of DSP microprocessor problems to converters controlling with asynchronous motors and execution of a project. Study includes information on quality single type processor, benefits and disadvantage whole solving. Of purpose is DSP converters control with DMC1500.
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DC/DC converter
Němec, Martin ; Kuzdas, Jan (referee) ; Procházka, Petr (advisor)
This project deals with transistorized converters in particular a four-quadrant bridge. The main part of project discusses the drivers of transistors and a possible way of controlling a converter. The proposal of control electronics and the regulation structure are involved in the second part. This project also includes a construction of an apparatus which will be used as a teaching material.
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Digitally Controlled Switching Power Supply
Krška, Vlastimil ; Zamazal,, Michal (referee) ; Šebesta, Jiří (advisor)
This master’s thesis is an introduction to switching mode power supplies, especially focused on digital control. It summarizes the basic topologies of switching mode power supplies, and discusses the fundamental issues of digital power supply control. It also summarizes basic informations about Piccolo microcontrolers, about experimental kit and about main parts of sample source code. Also is described here own implementation of the control law and the theory and implementation of maximum power point tracking. The conclusion of this thesis deals with implemantation a testing of the designed digitally controled switching power supply.
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The inverter for arc-welding
Vaculík, Josef ; Klíma, Bohumil (referee) ; Červinka, Dalibor (advisor)
This diplom thesis theoretically deals about principle of pulse welding current source. Work explains operation principle of the single acting transmit converter used in realized construction and mention the others examples of converters types. Goal of the work is design individual parts of source : input filter, pulse transformer, output inductor and power semiconductors components. Thesis also contains description of the regulation circuitry of the converter, auxiliary power supply and pre-driver for power transistors. If everything will be all right prototype of the source will be assembled and measured. Results will be compared with theoretical assumptions.
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Step-down converter with variable output voltage in range from 20 to 100 V
Pazourek, Petr ; Šmirg, Ondřej (referee) ; Hanák, Pavel (advisor)
This master's thesis describes the design and the implementation of a step-down converter with variable output voltage for laboratory purposes. In the introduction the basic functions of switching power supplies are shown, flyback, forward and push-pull converters are described, followed by some integrated circuits for power management of converters. The second chapter discusses in detail the design of requested switched power supply, including the calculation of the electronic parts and design of the storage inductor. Following are described some observations of building this power supply, including the output characteristics. In conclusion, the obtained results are assessed, including proposals to improve whole design.
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