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Intelligent control of the storage water heater
Vašica, Radoslav ; Macháček, Jan (referee) ; Šlezingr, Jan (advisor)
The work generally deals with the possibilities of preparing hot water in household and analyzes saving posibilities. At the beginning of work the history of hot water preparation is briefly indicated. Chapter 3 deals with different ways of heating. Described in more detail electric storage heating is in chapter 4, where can be found the effect of heating to the power network, especially to the daily load diagram. The following are the information of the tariff policy, as a tool for motivation of consumers, for using the storage heating. In the next part, beginning with the fifth chapter, is written about the possibility of energy saving by means of intelligently controlled boiler. That eliminates the disadvantage of storage heating, which are the tank thermal losses. Heating is based on a certain regularity in the behaviour of the user and manages the preparation of water according to expected consumption. The sixth chapter then contains design of own algorithm for economical control of heating and also energetic and economic assessment of potential savings.
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Winding diagnostics using surge test
Vojtěch, Pavel ; Šlezingr, Jan (referee) ; Drápela, Jiří (advisor)
Master‘s Thesis deal with analysis given to diagnostic method plus her applicability to failure detection electrical machine plus apparatus in different phases their live. A further realization physical model with subtransient generátor PSG204A 4kV, for teach – in disorder on single – layer air coil plus stator winding induction motor inclusive evaluation results test.
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Electrical machines fault simulator
Krátký, Michal ; Krbal, Michal (referee) ; Šlezingr, Jan (advisor)
The goal of this bachelor’s thesis is the laboratory task focused on vibrodiagnostics of rotating electrical machines. The thesis is divided into theoretical and practical part. The theoretical part is made of information related to rotating electrical machine mainly its faults and technical diagnostics. Besides that the vibrodiagnostics is involved into the theoretical part as well. The practical part deals with the design of laboratory task focused on vibrodiagnostics of rotating electrical machines. There is shown how vibrations influence the machine during the operation. There is used asynchronous machine 1LA7080 and vibrometer MV-5L and noncontact tachometer UNI-T UT372 for this experiment. The second task is the starting current diagnostics. The starting current ofthe engine with the rotor asymmetry 1LA7080 and rotor symmetry 1LA7090 is going to be analyzed here. On these engines will be shown, how current flicks affectthe magnetic field of the engine in the air gap.
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The quality of electric energy in a low voltage public supply networks
Macoszek, Pavel ; Šlezingr, Jan (referee) ; Bok, Jaromír (advisor)
This thesis contains four main chapters, which describe qualitative parameters of supply voltage and measurement and analysis received information. The theoretical part consists of three chapters. Characteristics of low voltage are described in the first chapter. Next chapter describes disturbing events, which have influence on quality supply voltage, reasons for their occurrence spreading in network, eventually arrangement leading to the disappearance of disturbing events on other electric appliances in network. Last theoretical chapter describes measuring instruments of supply voltage. The purpose of these theoretical parts is to introduce the reader into supply voltage quality issues and can be used for preparation of measurement and evaluation of acquired data under norm ČSN EN 50160 (Voltage characteristic of electricity supplied by public distribution systems). An analysis of real network is the last part of this thesis. There is applied acquired knowledge with the aim of analysis of real states of qualitative parameters of supply voltage in network.
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Design of intelligent building with modern system Ego- n
Kočí, Martin ; Šlezingr, Jan (referee) ; Bátora, Branislav (advisor)
The thesis resolves an electro-installation project for an intelligent home. The system chosen is the Ego-n modern electro-installation system, a product of ABB, s.r.o. which is generally available on the market in the Czech Republic and in Slovakia. In the first part of the thesis the difference between a conventional and an intelligent electro-installation is described, and the basic principles of the Ego-n system are formulated together with the range of use. Also included is a brief profile of the basic components and for some of them specific options for configuration and operation in practice. The work also describes the principal advantages and disadvantages of the Ego-n system, especially from the point of view of the user of the building. The reference to communication in busbar intelligent electro-installations is conceived as an overview, designed to give a general idea of busbar processes. The majority of the thesis is aimed at a practical design of an intelligent electro-installation in a specific building. Apart from the text where the project is briefly described and explained, all the technical documentation necessary for the realisation of the building is produced in the appendices: a ground plan drawing with the electro-installation components plotted in, together with drawings of the switchboards. The project also includes a budget and breakdown of materials.
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Calculation and design of electric underfloor heating according to CSN
Urbánek, Jaroslav ; Šlezingr, Jan (referee) ; Macháček, Jan (advisor)
This thesis deals with the issue of electric underfloor heating and various types of heating elements such as heating cables, heating mats and heating foils. The thesis also contains elements that are important in the implementation of underfloor heating. Part of this work are listed standards addressing the issue of underfloor heating. In the final part there is a proposal of underfloor heating and photovoltaic system for a family house with the economic evaluation as an integral part of the issue.
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Simulation of selected power energy phenomena
Kochánek, Martin ; Bátora, Branislav (referee) ; Šlezingr, Jan (advisor)
This bachelor's thesis deals with the operation of dispersed generation of electricity in the electrical network, the possibilities use of virtual power plant and smart distribution grid. The aim of this work is to build a model of electrical distribution networks in the simulation environment. Connect dispersed generation of electricity to the network and simulate events that may occur in the network and the phenomena to measure and evaluate selected parameters.
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The Autonomous House or Living Grid-off
Chlebný, Radek ; Šlezingr, Jan (referee) ; Macháček, Jan (advisor)
This thesis deals with energy self-sufficiency focusing on the independence of the electric grid. Basic line emanating project form a concrete proposal for autonomous energy supply system. Emphasis is placed primarily on photovoltaic systems, electric energy accumulation and selection of individual components of such a system. Another important part of the thesis is also an economic evaluation of design variations. The thesis also deals with a market research, and thereof derived benefit assessment of each technology. The accompanying chapters are then devoted to the history of autonomous life style or classification of buildings according to their energy performance.
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Small Hydropower Plant Project
Košíček, Jiří ; Šlezingr, Jan (referee) ; Radil, Lukáš (advisor)
This bachelor thesis consists of a description of the legislative framework of small hydropower plants, which is necessary to know for their operation and construction. It also describes the general theory of small hydropower plants, specifically describes the individual technical elements - weir, gratings, sluice gates, ambushes, sand traps and stones, open flume, pipes and stilling basin. Another part assesses the economic feasibility of small hydropower plants for specific hydrological conditions and design of turbines on suitable work flow. The main part is devoted to specific proposal small hydropower plants in the village Tulešice by the river Rokytná.
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Possibility of using LabView for simulation and calculation of the energy balance of a hydrogen-oxygen fuel cell
Fryda, Daniel ; Macháček, Jan (referee) ; Šlezingr, Jan (advisor)
This bachelor thesis deals with the calculation of the characteristics of hydrogen-oxygen fuel cell and their simulation in LabVIEW. It is divided into several parts. At the beginning thesis clarifies the issues of fuel cell and contributes to a better understanding of its activities. It explains what a fuel cell actually is, what is the principle of its work, describes its components, access to its history and its development to the present. Further on the thesis divides fuel cells into the different types and deals with deeper hydrogen-oxygen fuel cell. The fourth chapter is devoted to its use in practice and in laboratory education . Another part is focused on the LabVIEW program where is described the principle, use and basic parts of the program. In the practical part is implemented the model of the laboratory task in LabVIEW program. In chapter no. 6 are developed the operating instructions of the program and described in detail the creation of the model. The aim of this bachelor thesis is creation of an overview of fuel cells, their properties and possibilities of using for practice and laboratory education and then simulation of the laboratory task in LabVIEW program which is based on measured data and the characteristics of the hydrogen-oxygen fuel cell. This laboratory task can be used as teaching material for students in the Department of Electrical Power Engineering.
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