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Production Comparison of High Voltage Winding of Dry Transformers
Mrajca, Miroslav ; Bulín, Tomáš (referee) ; Ondrůšek, Čestmír (advisor)
This bachelor thesis deals with the history, importance, usage, construction and principle of the operation of transformers. The thesis also focuses on the detailed description of the parts which the dry power transformer is composed from, as well as the description of their manufactory and following assembly into one unit. The thesis contains the comparison of different technologies of manufactory of higher voltage winding and magnetic circuit. The thesis contains a process of design of the dry transformer with an example of calculation. The output is a comparison of different high voltage winding technologies in terms of production costs and winding factor.
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Calculation of heat and force field UniGear ZS1
Mokrý, Lukáš ; ABB, Drahomír Tůma, (referee) ; Dohnal, Petr (advisor)
The aim of my work is to describe high-voltage switchgear type UniGear 500R, which is part of UniGear switchgears family. I will focus on heating issue of one 500R unit and its parts during operation. Maximum values of this heating is limited by standards and can´t be exceed to ensure safe and reliable operation. That is why the heating tests are necessary part of designing and developing switchgears. Calculation will be made by two different ways. First is classic one-pole heating net method and second is numerical simulation in Solidworks flow simulation program. Except the theoretical description there will be presented also used 3D model and explanation of both method, used to calculation and simulation. Last point of this work is measuring of this type of switchgear and getting real data. The main point there is to compare measured values with values calculated and decide if is possible to simulate tests with appropriate accuracy. Then would be also possible to substitute the real test in laboratory, which costs many thousand crowns and takes lots hours of time. This work is collaborated with EJF division of ABB Company, where I am employed. Heating issues in this company is always on process, because of developing and improving of their products. So this work could be helpful in this field. ABB provides all materials needed, especially technical catalogues, 3D model and final values from laboratory measuring. Support from college faculty is mainly in study consultations and proposing of calculations making. In the end of work will be make final comparison and evaluation of achieved results.
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Bridge on a interchange in Brno
Kyzlink, Lukáš ; Pachl, Radek (referee) ; Panáček, Josef (advisor)
Diploma thesis describes the design and assessment of bridge supporting structure on the ramp in Brno. Road bridge crosses the I/42 road and railway. The bridge is part of the VMO Brno. The structure is designed from prestressed concrete. Assessment of construction is carried out in accordance with applicable European standards. When designing the support structure is taken into account the gradual construction of the bridge. The thesis includes design calculation, drawing documentation and 3D visualization.
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Design of oil distribution transformer
Mrajca, Miroslav ; Mach, Martin (referee) ; Ondrůšek, Čestmír (advisor)
This master thesis deals with the manufacturing process of oil distribution transformers. Firstly, the thesis devotes to the design arrangement of the magnetic circuit and its manufacturing technology. The procedure of cutting laminations for core and their building into the core. Subsequently, the thesis describes technologies used for manufacturing primary and secondary windings including procedures on winding machines. Then it deals with the production of the tank and the final assembly of the transformer into one unit. The next part of the thesis discusses the design procedure of the assigned distribution oil transformer with a numerical calculation while respecting the requirements of the standards. Finally, the costs of the material of the designed transformer are determined.
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Bending and cutting press machine for representativ part
Kvapil, Jan ; Vašátko, Pavel (referee) ; Knoflíček, Radek (advisor)
KVAPIL Jan: Bending and cutting press machine for representativ part The Master´s thesis, which is developer in an undergraduate degrese in M-VSR, provides a brief overview and description of the cutting and bending technology. The thesis is carried out the calculation, which is essential for the design cutting and bending tools. Models and design are created in the software SolidWorks 2012. The Master´s thesis includes a general procedure after the award until after copy the parts on it.
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Magnetic field analysis with finite element method and magnetic sensor
Volf, Tomáš ; Kurfűrst, Jiří (referee) ; Skalka, Miroslav (advisor)
The magnetic field analysis by MKP and magnetic probe project deals with magnetic field analysis of asynchronous machine cross section. This analysis is written in detail along with the necessary theory of asynchronous machine and the ANSYS program. The magnetic field of selected machine is measured by magnetic probe and results are compared with calculation. The next part of thesis is draft of device for the magnetic field analysis.
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Design and electromagnetic calculation of small power wound field synchronous machine
Laštovička, Josef ; Vítek, Ondřej (referee) ; Bárta, Jan (advisor)
The topic of this bachelor thesis is the issue of synchronous machines with a wound rotor and their design. The first part of the work summarizes the theory of synchronous machines with a wound rotor. A more detailed focus is given to salient pole machines. The second part summarizes specific steps in designing a machine with a wound rotor. The third part is to create a program for calculating a salient pole synchronous machine. The program is based on knowledge gained in the first and second parts using the Python programming language. The fourth part focuses on electromagnetic design, its optimalization, simulations and interpretation of their results. The last part contains technical production documentation and machine model.
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Energy labels of electrical appliances
Diblík, Jan ; Bok, Jaromír (referee) ; Drápela, Jiří (advisor)
In my bachelor's thesis I engaged in energy cards of electrical appliences. I acted and controled for Law number 406/2000Collection, for manage energy what frame preparation Czech Republic walk in European Union introduce in harmony with european legislature. This law and legislature in conjunction with law signify charge for all producer alectical appliences mention energy cards in the all appliences. I mention for example energy card. On the energy card are appliences distribute for seven energy class according to class A is the most of economy class and class G is least economy class. On the energy card mention next particulars, for example name or business symbol of producer, identity symbol of model applience use of producer or impporter and next. In my thesis I engaged progresses for determine energy class electrical appliences formation universal progresses for determine energy class appliences, define basic universal qualities and parameters. There are pieces of knowledge is possible take advantage of already non-cards appliences, determine energy classes divided for two groups. First group energy class is enumerace for consuption electric energy and second group energy class is enumerace with regard to next quantity. It was extract wrote next important and universal date on energy card. All pieces of knowledge took advantage of application energy card on non-card appliences factual home bakery of bred. At this home bakery of bred chaose reference conditions at what measured electrical consuption. I was set up energy class in what Iam put into its this consuption. For objektive was set up energy card this home bakery of bred.
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Calculation of the cooling of the asynchronous machine ANSYS CFX
Horálek, Lukáš ; Veselka, František (referee) ; Janda, Marcel (advisor)
The issue this master’s thesis discusses the cooling synchronous machines. Specifically, the calculation of cooling induction motor using the finite volume method. Using Autodesk Inventor will create a 3D model of a real electric machine, ie asynchronous motor and then ANSYS WORKBENCH perform system analysis CFX, based on the finite volume method. Furthermore, we realize the air speed measurements on a particular machine and the individual results obtained by measuring and calculating the actual compared with each other. The master’s thesis also deals marginally with closely related to it. For the same machine model, we apply the calculation of the temperature fields using the finite volume method and them perform a thermal analysis. Next, we can carry out the measurement of the temperature on the motor itself and calculate the measured values and the measured compare each other.
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