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Cyklocomputer with Frequency Meter
Netáhlo, Tomáš ; Fedra, Zbyněk (referee) ; Hermany, Jiří (advisor)
The Bachelor’s thesis deals with design and realization of the cyklocomputer with a measuring frequency of pedaling. The device measures speed, pedaling frequency, heart rate, distance traveled and the current time and date. Measured values are stored in memory and then can be transferred via USB bus to computer. The work includes a description of the magnetic sensors and ECG sensors. The practical part includes the design of hardware and software cyklocomputer.
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Proposal PCB power of the charger for electromobil
Kharchenko, Vadym ; Otýpka, Jan (referee) ; Kuzdas, Jan (advisor)
The aim of this Bachelor Thesis is the PCB design of the Quick Charger performance based on new semiconductors SiC for electric vehicles. This work builds on a semester project from a winter semester of this academic year. In addition to the PCB design here described dimensioning of power devices used in the construction of Quick Charger, setting their losses and carry out the measurements, which aims to compare the performance of DC / DC converters with manned SiC diodes converter, whose structure is based on conventional silicon diodes.
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Inverter 12 V DC to 230 V AC with Protection
Navrátil, Petr ; Šilhavý, Pavel (referee) ; Kubánek, David (advisor)
This bachelor thesis deals with converter, which alters 12 V of direct input Voltage to 230 V of alternating Voltage output with frequency of 50 Hz. Introduction describes the basic parting of convertors. The chosen concept of designed convertor was based on that chapter. The practical part describes construction of this convertor including necessary safety shielding. At the end, the construction of the converter was tested by practical measuring and it was proven that the result meets with required values with slight anomaly.
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Three-phase accumulator inverter
Mikulka, Martin ; Boušek, Jaroslav (referee) ; Háze, Jiří (advisor)
The topic of this work is the design of a voltage converter and a 3-phase inverter. The final converter will be able to supply a 3-phase output voltage with a selectable waveform, but primarily a harmonic sinusoidal. The inverter will have an adjustable voltage (sinusoidal amplitude) in a certain range, as well as the possibility of a small correction of the output frequency and phase shift so that it is possible to generate, for example, a two-phase 120 grid or other, test course.
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Multifunction board computer for motorcycles
Netáhlo, Tomáš ; Tošovský, Petr (referee) ; Brančík, Lubomír (advisor)
Master’s thesis deals with a design and a realization of multifunction board computer for motorcycles. The goal of the device is measuring speed, rotation speed of engine, temperature of ambient, temperature of engine, temperature in intake including signalization of overvoltage and hightemperature. The device is completed by above standard function such as measuring titl of motorcycle, climbing of route, route recording and data transmission to the computer. The thesis includes a complete solution of hardware and software part of the device.
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Voltage converter with MPPT algorithm for solar cell
Špina, Martin ; Pazdera, Ivo (referee) ; Huták, Petr (advisor)
This thesis deals with design of solar lithium ion battery charger using microcontroller controlled step down DC/DC converter. Control algorithm is designed to utilize most the of the energy coming from the solar photovoltaic panel, by using maximum power point tracking technology. This makes it as efficient as possible at any irradiation intensity level or temperature.
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Regulation of DC hub dynamo
Navrátil, Petr ; Knobloch, Jan (referee) ; Huták, Petr (advisor)
The aim of this bachelor’s thesis is the theoretical preparation, design and implementation of a DC converter for a bicycle charge dynamo with compensation for its large inductance. The designed converter will be able to use the maximal power of the dynamo.
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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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LED Driver evaluation kit for Automotive Front-Lighting
Večeřa, Jindřich ; Kubíček, Michal (referee) ; Dřínovský, Jiří (advisor)
This thesis deals with design of evaluation platform for integrated circuit NCV78934, which is designed to control LED headlights in automotive industry. The theory concerning the current regulation of buck converter, schematic design, PCB design and software design are also included in the thesis. Finally the measured data and testing procedures of the designed evaluation platform are discussed.
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