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Photoimpedace spectroscopy characterization of optical and electrical properties of the photovoltaic cells
Mocharová, Zuzana ; Chladil, Ladislav (referee) ; Novák, Vítězslav (advisor)
Diploma thesis mainly describes the theoretical knowledge of the topic photoimpedance spectroscopy characterization of optical and electrical properties of the photovoltaic cells, which contains development and princip of cells working, material properties of photovoltaic cells, explanation of electromagnetic waves, spectrophotometry and impedance spectroscopy, followed by a discription of the measuring device and used measuring methods. The experimental section for each measurement method describes the steps of setting the program, then the tables with measured values are involeved in some parts and a part of each method are summary graphs of measured values with subsequent evaluation.
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Time changes of the photovoltaic cells properties
Kvapil, Jakub ; Vaněk, Jiří (referee) ; Novák, Vítězslav (advisor)
The thesis is about the problematics of perovskite, production of perovskite structure and measurment of photovoltaic cells. The introduction deals with material properties and sctructure of perovskite. There is explained a problem of perovskit photovoltaic cells and production of perovskite structure. Then the measurement methods are explained, which are used for evaluation of photovoltaic cells properties.
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Effect of geographical location on solar systems performance
Kuljovský, Martin ; Weismanová, Júlia (referee) ; Jaroš, Michal (advisor)
The sharp price increase and the impending depletion of fossil fuels has led to an increasing interest in renewable resources. This thesis deals with one of the most lucrative substitution between renewable sources - the solar energy. The introduction describes the emergence and spread of energy in the universe, then is devoted to basic distribution of collectors and informs about the possibilities of their use. In particular, it contains formulas for calculating the basic performance characteristics and then comparing differences between panels. Finally, it compares the effectiveness of collectors for different geographical locations in the Czech Republic.
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Model for energy control from solar panel
Hromek, Jiří ; Dvořáček, Martin (referee) ; Malounek, Petr (advisor)
This is specifies problems of electricity development from the sun. It informs about the principles and especially means of optimizing of extracting maximum. There is created a prototype in the Matlab/Simulink environment representing a source of radiation and a solar panel. A prototype output is an extracted voltage for a different angles of panel tilt compared to a light source and a different lighting intensity. A prototype is practically realized then. Then there is devised a procedure of prototype for a maximum voltage extracting from solar panels. A prototype is liable to connect to the programmable controller of B&R company.
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Wireless weather station
Filka, Tomáš ; Novotný, Radovan (referee) ; Levek, Vladimír (advisor)
This diploma thesis deals with a draft of wireless weather station, whose task is to measure basic values inside and outside the home. Measured variables are for example temperature, atmospheric pressure, relative humidity, wind speed and direction or concentration of carbon dioxide (CO2). These data will be transmitted to a web server for later processing. Possible technical solutions are described and the outcome is a designed printed circuit boards, which has been assembled and tested. Resulting system was tested in trial operation.
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An assessment of returnability of solar collectors installation in low-energy family house
Hrbata, Jiří ; Pešek, Martin (referee) ; Jaroš, Michal (advisor)
Increasing of standard of living, automation and mechanization of production and industrial growth lead into energy need growth. At the same time the energy prices continuously rise and it is still more preferable to use renewable energy, particularly solar radiation. This thesis contains basic information about usefulness of solar radiation, solar collectors and ways of their integration into heating systems. Particularly, it deals with the assessment of returnability of solar collectors instalation in the low energy family house. It contains calculations of necessary heat for heating, hot water heating and energy gains from solar collectors. Returnability assessment is demonstrated on concrete example.
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Statistical processing of data of solar radiation in place BUT FME Brno
Nečasová, Klára ; Jaroš, Michal (referee) ; Štětina, Josef (advisor)
This bachelor’s thesis deals with the measurement of solar radiation. The aim of this work is to determine the usefulness of solar energy and solar radiation compared to the oblique and horizontal surface. You are given basic information about solar radiation, the Solar, collectors and sensors. Further work includes measurements and calculations of solar radiation in the course of one year and at the end of the evaluation of measurement results.
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Education Computer Program for Demonstration Methods of 3D Objects Illumination and Shading
Chvál, Vít ; Herout, Adam (referee) ; Zuzaňák, Jiří (advisor)
This work describes an Education Computer Program for Demonstration Methods of 3D Objects Illumination and Shading creation. There are in detail described lighting models in this text. There are Phong and Lambert models as representatives of empiric models and BRDF as representative of physical model. Next part of the text describes types of shading methods. You can find there constant, Gouraud and Phong method. Following part of the text discuss issues of Educational applications. The rest of the text is devoted to design and implementation of the application.
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Accumulation of Energy from Renewable Energy Sources
Heller, Ondřej ; Radil, Lukáš (referee) ; Mastný, Petr (advisor)
The objective of the first part of master’s thesis is mapping the potential of various types of renewable sources in Europe and Czech Republic, especially solar energy, wind energy, water energy and biomass. There are described principals and ways of energy generation from these sources, brief overview of current technologies, and also their advantages and limitations. An important part is electric supply continuity from renewable sources, there are large differences and the resulting to restrictions on construction and connecting the units to the power system. In this work there are mentioned some impacts on network and rates of change of supply, some sources are also evaluated in terms of maximum power, that can be connected to the power system in our country. The conclusion of the first part is dedicated to energy storage technologies, which are suitable and usable for renewable sources, there are described their principals, properties, status of development and types of aplications, in which these technologies are used. This chapter also focusses on the price level of each technology. The second part of the thesis deals with 1 MWp on-grid photovoltaic power plant design. This design includes also the redox flow batteries accumulation, the first variant calculates on 24-hour steady energy supply, the second optimalized variant calculates on daily energy supply. There are the accumulation system costs estimated and also the payback period for the both variants. Additionally there is also determined minimum penalization for cost-effective operation. The last part is dedicated to changes of impact on the local grid and changes of system impacts, after the accumulation system is installed.
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Characterization of the perovskit photovoltaic cells
Dvořák, Tomáš ; Strachala, Dávid (referee) ; Novák, Vítězslav (advisor)
The thesis discusses the problematics of perovskite solar cells. The introduction deals with the history of the solar cells as the next part is dedicated to generations of them as well as to their principle and the variables measured in photovoltaic cells. The next part deals with perovskites, their properties and structure. Later the part about perovskite solar cells follows. The last part is dedicated to experiments which were executed on samples of perovskite solar cells.
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