|
|
Resistance saw
Kalčík, Petr ; Minárik, Vladimír (referee) ; Procházka, Petr (advisor)
This work is focused on the design and construction of component parts of resistance saw. Mechanical parts consist of a movable bracket and a taut cutting wire of Constantan. Electrical parts are designed to supply and control temperature of the cutting wire. The current intensity in the cutting wire is compared with the required current intensity. The difference of these two measurements is fed into a PI - controller. The next part is a PWM generator which generates the square wave signal. The pulse ratio of this signal is proportional to the required temperature of the cutting wire. This signal switches a switching converter that consists of a power transistor P-MOSFET IRF5210 and a diode MBR20100CT. Choking coil with a ferrite E core and with the cutting wire is connected to the output of the converter.
|
|
|
Low-power electrical sources
Kotásek, Ondřej ; Pazdera, Ivo (referee) ; Procházka, Petr (advisor)
In the theoretical section describes the different types of DC / DC converters, which are among the best known. It's a drive with one storage element, decreasing and increasing non-inverting converter, an inverting converter with a common choke and Čuk’s changer. The second part deals with the actual design and implementation of the two input sources for low power. Here are described two main components designed for each circuit. Furthermore, the work to create schematics and PCB in Eagle. Finally, learn how to solder components on the PCB made.
|
|
|
Controllable switching power supply 0-1000 V / 100 W
Hofmann, Oldřich ; Procházka, Petr (referee) ; Martiš, Jan (advisor)
The thesis deals with the design and construction of a switching power supply with output voltage adjustable from 0 to 1200 V and rated power of 120 W, which will be used to replace the existing high voltage power supply for the irreversible electroporation (IRE) device developed at UVEE FEEC BUT. The thesis focuses on a basic description of the IRE device, a description of usable converter topologies and a selection of the best topology for the required purpose. The selection of the control circuit concept and its design are also integral parts of the thesis. The final part of the thesis contains the assembly of the power supply and the measurement verifying its function.
|
|
|
Drivers for power SiC MOSFET transistors
Vitek, Vojtech ; Vorel, Pavel (referee) ; Procházka, Petr (advisor)
The bachelor thesis describes gate driving principles of power MOSFET transistors made of silicon carbide material. The autor's aim is describing a different types of gate drivers and basic rules during process of designing gate drivers. In the theoretical part, the author will mount printed circuit board of gate driver designed on UVEE FEKT VUT Brno and verify functionality.
|
|
|
Inverters for photovoltaic power plants
Rusyn, Jevhen ; Pazdera, Ivo (referee) ; Procházka, Petr (advisor)
The bachelor thesis deals with the issue of laboratory verification of converters for photovoltaic power plants according to the currently valid legal and official regulations and standards. In the thesis, a literature search has been conducted on photovoltaic systems and connection conditions of converters for PV plants. The thesis also focuses on the verification of the characteristics of the RCT Power Tripower DC 6.0 inverter, for which firmware modifications were made to meet the connection conditions of the distribution system operators.
|
|
|
Electrical installation in family house
Tesař, Jan ; Procházka, Petr (referee) ; Ondrejček, Vladimír (advisor)
This Bachelor Thesis is concerned with the design of the electrical installation of a family house. There are two main parts of the thesis – theoretical basis and the main design. In the theoretical part the reader is at first introduced to a powerline section, in which the electrical installation from the powergrid to a terminal equipment is described. Next part is about a low voltage wiring, where the commonly used types of wiring and devices are described. In the third part the reader can read about a lightning protection and its inner and outer parts. The main design consist of situational designs of devices and wiring in the house, switchboard designs, revision of the electrical protection and the technical report.
|
|
|
Power Switching Transistors
Mikláš, Ján ; Procházka, Petr (referee) ; Patočka, Miroslav (advisor)
In this thesis, prerequisities for a switching loss measurements are established as well as designing of DC-bus and the base/gate driver for the power transistors; followed by derivation of mathematical approximation of transistor conductivity gCE =iCuCE, circuit simulation using gCE as a transistor model and a discussion of measured waveforms.
|
|
|
Laboratory module for educational purposes
Tuhý, Luboš ; Vašíček, Adam (referee) ; Procházka, Petr (advisor)
This thesis describes the design and implementation of the transistor inverter to the subject of power electronics first outcome of this thesis will transistorized inverter that will serve as a demonstration tool in laboratory practice course electrical power. The laboratory preparation, students will be able to virtually test your theory acquired knowledge of the issue. Part of the theoretical analysis will be proposed circuit simulation program through classes Spice.
|
|
|
Batteries for independent traction
Hladiš, Vítězslav ; Klíma, Bohumil (referee) ; Procházka, Petr (advisor)
The aim of this work is a review of literature of all types of batteries designed for driving in an independent traction (transport). The various types of batteries with them and compare based on their parameters (weight, cost, energy density / kg) to select the appropriate type of battery to drive electric cars, wheelchairs, electric bikes and scooters. The thesis is not a practical product or supplement. This is only a theoretical analysis of the issue.
|
|
|
Compact inverter for BLDC motor
Nevřivý, Tomáš ; Červinka, Dalibor (referee) ; Procházka, Petr (advisor)
The work describes the design and implementation of compact inverter for brushless DC motor, which have mechanical power 600 W and rated torque 1.6 Nm. Motor is designed for DC link voltage with value 300 V. The focus is placed on the cost and simplicity. On this basis, the inverter is designed for uses single purpose power and control circuit. The power part is solved using a circuit FSBB15CH60C. The circuit is placed on a separate board of power electronics. Cooling of the power circuit is performed by the surface structure of BLDC motor. Control of the inverter ensures circuits LB11696V and NE566. The both circuits are placed on separate board of control electronics. Circuit LB11696V contains a control algorithm, as well as protections, which are necessary for safe operation of the inverter. Power supply of electronics is performed using step-down converter from MYRRA company.
|
guest ::
RSS feed.