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Proposal of topology of piezoceramic composite sensor
Dostal, Vojtěch ; Ševeček, Oldřich (referee) ; Majer, Zdeněk (advisor)
This master thesis deals with design and numerical modelling of piezoceramic sensor, which is placed on a rail, in order to generate electrical energy, which can be used for wireless monitoring of railway traffic and to monitor the condition of the railway. The thesis is divided into three parts. Theoretically background of piezoelectric energy harvesting is described in first part, where some previous application of piezoelectric generator in railway area are shown. In the second part, parametric analysis of numerical model is performed, which directly leads to finding best location on a rail, where piezoelectric generator should be placed. For this analysis the homogenized model of MFC sensor was used. Results of the numerical model were then compared with the results of the conducted experiment. The third part presented own design of piezoceramic sensor, which is placed onto most suitable location on a rail. Results from numerical analysis shown eligibility of using piezoceramic sensor to monitor the railway traffic.
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Project for an automouse source of electrical energy
Vinkler, Stanislav ; Bok, Jaromír (referee) ; Matoušek, Antonín (advisor)
Purpose of the thesis is enlarged the theory about potential utilization of an autonomous (autonomic) electric power supply used for a family house. Forepart will dealt with description of the resources in accordance with conversion of different kinds of energy to electric power. There will be always given the principle of the power generation as well as a list of main components of the system for each single source. Second part will be focused on generator output assessment of the autonomous source to ensure the power supply for the model family house. There will be my own design of the autonomous sources namely a project of a small hydropower plants and a project of a cogeneration unit in the third section of the thesis. The last part is aimed at the techno-economical evaluation of the engineered sources.
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Automotive Alternator Innovation
Volek, Martin ; Hýsek, Roman (referee) ; Hájek, Vítězslav (advisor)
The work deals with the analytical electromagnetic design of automotive claw-pole alternator 14V/120A. This design is verified in program Maxwell with a RMxprt tool. The results of both calculations are compared. Designed alternator is also compared with the results measured in the laboratory on the alternators of similar type. Furthermore, there are analyzed individual power losses of machine and listed options of reducing these losses, which results in an increase in overall efficiency.
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Measuring and analysis of non-harmonic signal in LabVIEW
Potyš, Jiří ; Janda, Marcel (referee) ; Huzlík, Rostislav (advisor)
This thesis will be concerned with using the program LabVIEW for measuring and analyzing of non-harmonic signals. An introducing of the bachelor thesis present a strict summary. The second chapter describe the program LabVIEW, its abilities and application for virtual instruments. The third part describe possibilities of using the frequency filters in signals area. The fourth part will be included the theoretical basics of the Fourier transform, its use and possible applications in LabVIEW program and the use of window functions. The fifth chapter outlines the measurement of effective values of different types of signals. The sixth chapter contain information about the measurement of active power. The seventh chapter describe the plan of the measurement program and the results of calculated and measured dates of this program. The final part make evaluating of the results of this bachelor thesis in comparison with a real appliance Yokogawa WT 1600 for analysis of signals.
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Optimalization of vibration microgenerator
Kurfűrst, Jiří ; Hadaš, Zdeněk (referee) ; Ondrůšek, Čestmír (advisor)
The article describes how to produce energy necessary for sensor supply. These generators are used as a local source operating on vibratory principle. Mechanical vibrations that occur in moving machines, in nature etc. are used in order to gain required energy. So are kinesis principles and analysis employed in some of the avaible generators. It also contains patent and literary background research. Work is oriented to solving mechatronic perimeter, in the concrete micro - generator. Mechatronic perimeter piles from seat power control parts and mechanical parts, where common solving equation system leads to correct solving. Mentioned analyses be of consequence for usage optimization methods artificial intelligence. Optimization method are used on optimum solving proposal micro - generator. To inquest dynamism system was used program Simulink (part of MATLAB), generator is buckthorn for f = 17 [Hz] acceleration yam = 0,5g [ms-2]. As a algorithm is used SOMA – All to one.
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Power supply in an automobile
Soukup, Patrik ; Mach, Martin (referee) ; Hájek, Vítězslav (advisor)
This work deals with the study of automotive alternators and their theoretical analysis. We can find there a listing of losses arising from the alternator, explanation of their formation and also the way of their reduction. Losses reduction is one of the aspects of innovation leading to increase in overall efficiency of the automotive alternator. Therefore a design of particular ways of innovation is made in this work and subsequently the design is verificated using Maxwell - RMxprt.
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Proposal of topology of piezoceramic composite sensor
Dostal, Vojtěch ; Ševeček, Oldřich (referee) ; Majer, Zdeněk (advisor)
This master thesis deals with design and numerical modelling of piezoceramic sensor, which is placed on a rail, in order to generate electrical energy, which can be used for wireless monitoring of railway traffic and to monitor the condition of the railway. The thesis is divided into three parts. Theoretically background of piezoelectric energy harvesting is described in first part, where some previous application of piezoelectric generator in railway area are shown. In the second part, parametric analysis of numerical model is performed, which directly leads to finding best location on a rail, where piezoelectric generator should be placed. For this analysis the homogenized model of MFC sensor was used. Results of the numerical model were then compared with the results of the conducted experiment. The third part presented own design of piezoceramic sensor, which is placed onto most suitable location on a rail. Results from numerical analysis shown eligibility of using piezoceramic sensor to monitor the railway traffic.
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Electricity production and renewable energy sources
Dureiko, Darya ; Grosz, Jan (advisor) ; Macháček, Otakar (referee)
The theme of this bachelor thesis are Renewable Energy Sources in the Czech Republic. In the theoretical part are described in detail the various sources of alternative energy. The practical part is devoted to the development of electricity production for the years 2005- 2014. Information about the production of energy allow you to calculate simple statistical indices that show how it develops the production from the point of view of time trends. The model example in the second practical part calculates the return on investment on the construction of wind power stations from 2016. Examines the period of return on investment, net present value and internal rate of return.
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Power supply in an automobile
Soukup, Patrik ; Mach, Martin (referee) ; Hájek, Vítězslav (advisor)
This work deals with the study of automotive alternators and their theoretical analysis. We can find there a listing of losses arising from the alternator, explanation of their formation and also the way of their reduction. Losses reduction is one of the aspects of innovation leading to increase in overall efficiency of the automotive alternator. Therefore a design of particular ways of innovation is made in this work and subsequently the design is verificated using Maxwell - RMxprt.
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Project for an automouse source of electrical energy
Vinkler, Stanislav ; Bok, Jaromír (referee) ; Matoušek, Antonín (advisor)
Purpose of the thesis is enlarged the theory about potential utilization of an autonomous (autonomic) electric power supply used for a family house. Forepart will dealt with description of the resources in accordance with conversion of different kinds of energy to electric power. There will be always given the principle of the power generation as well as a list of main components of the system for each single source. Second part will be focused on generator output assessment of the autonomous source to ensure the power supply for the model family house. There will be my own design of the autonomous sources namely a project of a small hydropower plants and a project of a cogeneration unit in the third section of the thesis. The last part is aimed at the techno-economical evaluation of the engineered sources.
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