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Uninterruptible Power Supply
Mrázek, Petr ; Harabiš, Vratislav (referee) ; Sekora, Jiří (advisor)
The thesis deals with Uninterruptible Power Supply (UPS) and associated problems of backup power in case of unexpected outages of electricity. Start of work is dedicated to limitation of the electricity supplies, as well as their causes and consequences. Furthermore, brief history of UPS and subsequently distinguish between UPS’s architectures. There is also a description of the energy sources such as batteries, flywheels or fuel cells. Part of thesis describes security of electricity supply in health care facilities, including requirements for emergency power. The own design of UPS is described in the end.
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Pendulum jaw crusher
Pitner, Jakub ; Jurásek, Jiří (referee) ; Malášek, Jiří (advisor)
This master thesis deals with structural design of pendulum for single toggle jaw crusher DC 110x70 and consists of several main parts. The first part focuses on the processing of mineral materials, especially on the process of mechanical uncoupling. The second part compares main characteristics of single toggle and double toggle jaw crushers. The third part deals with the structural nodes for the crusher DC 110x70. Another part is consisted of two variants for the pendulum construction with a comparison of the advantages and disadvantages. For the selected variant is carried out the stress control using Finite element method (FEM) in the program I-DEAS. The last part focuses on the positioning an exit slit for designed pendulum.
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Press LKJP 630
Haman, Tomáš ; Ptáček, Libor (referee) ; Omes, Jiří (advisor)
Master’s thesis deals with the design of the drive of the press LKJP 630, the configuration is a fixed range by the construction of LKJP. The thesis was ordered by partnership with company ŽĎAS, which is introduced. The first part is devoted to analysis of solved problems, it primarily contains the overview on forming machines, used drives and a description of their main parts. The second part deals with the drive itself, there is accomplished the design and performed the strength analysis of the major parts of the drive. Drawing documentation and bill of materials are included.
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Regulation options of renewable energy sources
Pavlíček, Jiří ; Morávek, Jan (referee) ; Pěcha, Jiří (advisor)
This bachelor's thesis deals with the regulation of renewable energy sources. It focuses on ways of managing and possibilities of regulation renewable energy resources. Indicates the proportion of various types of renewable energy sources in electricity production and their representation in the electrical load profile. Thesis describes the various storage systems, which can be used to stabilize the renewable energy sources. Evaluate the applicability of these storage systems in the energy sector.
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Modeling of rigid body rotation movement in space
Komůrková, Lucia ; Kotoul, Michal (referee) ; Franců, Jan (advisor)
This bachelor thesis is focused on rotation movement of rigid body in space. It is described rotation matrices and their characteristics. It is devoted to Euler angles representation of rotation in space and introduced Euler kinematic and dynamic equations. Moreover, it indicates the numerical and analytical method for solving these equations for special types of flywheels.
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Wind power generation and energy accumulation possibilities
Krbal, Michal ; Mastný, Petr (referee) ; Drápela, Jiří (advisor)
The goal of this bachelor’s thesis is to inform about conditions of running and the character of running of the wind power plants and about the suitable storage systems for the possibilities of time invariableness of power supply. For these reasons is immediately in the first chapter of the thesis described state of using wind power plants in The Czech republic and other countries in Europe which produce electric power. Description of individual functional parts is important mainly from the point of electrician conversion of kinetic energy of wind to electric energy with help of the electric power generator with the highest efficiency and without need for maintenance. It is necessary to know those functional parts of the power wind to be able to design appropriate storage system. The output electric power is very variable at time, mainly output voltage, because wind energy is variable too. The characteristics of the wind power plants as output voltage, frequency and their switching graded at time have to in accordance with requirements of the electricity supply systems not to disturb the stability or even collapse of the electricity supply system which would lead to serious economic consequences. These predicaments can be prevented with precise meteorological forecast or by using the acceptable storage system with small acquisition and operating costs, requirements to safeness and long service life, low weight and high efficiency of conversion of energy. The storage systems are classified into centralized and decentralizing systems with requirements to dynamic running and running time. To fulfil these conditions it is essential to choose acceptable and accessible locations with year lasting qualities of wind, which are being checked in advance using measurement and mathematical calculations.
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Project of Backup Power Source for the Heating Plant Červený mlýn
Nagy, Pavel ; Vrána, Michal (referee) ; Jára, Jaroslav (referee) ; Orságová, Jaroslava (advisor)
This thesis describes a design of backup power for heating plant Červený mlýn, Teplárny Brno, a.s. The backup power would be used in case of loss of power from the electricity grid, especially in the case of so-called "blackout". Backup power would supply only necessary systems of this heating plant, such as spinning turbines before stopping, control room power supply and lighting. Particularly designs of accumulator, flywheel and diesel generator are discussed. The main aim is to choose the optimum solution.
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