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Magnetic field analysis of synchronous machine
Volf, Tomáš ; Janda, Marcel (referee) ; Skalka, Miroslav (advisor)
The Magnetic Field Analysis Project of Synchronous Machine deals with program for magnetic field analysis of synchronous machine cross section. This program is written in detail along with the necessary theory of synchronous machine and the ANSYS program. After this the program for using different types of sectional wires modification is made – in the concrete for round conductors. It is attained the numeric computing method – The Finite Element Method. To creation of the magnetic field simulation serves ANSYS program, which uses The Finite Element Method.
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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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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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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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Losses reduction of single-phase induction motor
Vaško, Dávid ; Mach, Martin (referee) ; Vítek, Ondřej (advisor)
Bachelor thesis Losses reduction of single-phase induction motor deals with issues of increasing the efficiency of single-phase induction motor JMO90-4S-90 from EMP s.r.o. Slavkov near Brno. The first part deals with the theory of induction motors, especially single-phase motors and analysis of losses in induction machines. The second part deals with the introduction of motor solutions and methods used for loss reduction. In the third part, the thesis deals with the calculating selected parameters, the design of motors in RMxprt, and their modification for improving efficiency. The fourth part deals briefly with the design of motors in Ansys Maxwell, comparison of results obtained from Maxwell and RMxprt with the results from measurement for motor JMO90-4S-90 and comparison of results from Maxwell and RMxprt for other motor solutions.
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Solid State Tesla Coil
Pařenica, Jakub ; Mikláš, Ján (referee) ; Martiš, Jan (advisor)
The bachelor's thesis focuses on a theoretical description of the operation of Tesla's transformer, its design, including electronics, and its subsequent construction. The basic theory of the transformer replacement scheme is described. The Tesla transformer is generally described, as well as the methods of excitation of the primary side of the transformer, the generation of the discharge, the skin effect and the meaning of resonance. Furthermore, the work describes the construction of the primary coil holder, secondary coil. The work contains a pattern of the power board from the Eagle program, and everything is accompanied by photos. The work describes the recovery procedure and describes all the waveforms that were measured before and after the connection of the secondary coil.
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Single-Phase Induction Motor Calculation
Vácha, Pavel ; Vítek, Ondřej (referee) ; Hájek, Vítězslav (advisor)
The master´s thesis deal with the thesis of a single-phase induction motor that is more and more used all over the world. Its aim is assembling the information about this type of motor and its calculation. The content of the first part is the theoretical analysis of a single-phase induction motor and acquirement ways of the stroke moment. Than the work contains a project of basic schema of the single-phase induction motor with an auxiliary phase. The practical part is devoted to an elaboration of demonstration example of the single-phase induction motor with concrete parameters calculation, its method was projected before. Than there is practising successived measuring on the motor of the same parameters made firm EMP s.r.o. Slavkov by Brno in this part. In the conclusion there is the evaluation of the whole process with reached results.
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Small Induction Motors
Chvatík, Štěpán ; Mach, Martin (referee) ; Hájek, Vítězslav (advisor)
This bachelor‘s thesis deals with a single-phase induction motor and is organized in five sections. In the introduction is briefly described its construction and compared with three-phase induction motor. The first chapter describes the emergence of a rotating magnetic field of motor, methods of obtaining the starting torque, the influence on properties of different types of motors, comparing the torque characteristics of the different types of motors. In the second chapter is discussed permanent-split capacitor induction motor, its calculation and operational optimization. The third chapter deals with the determination of general principles of calculation and calculation method of single-phase induction motor with auxiliary winding. The fourth part verified the accuracy of these procedures on the selected motor when we performed calculations based on the input parameters of the motor, and after that these calculations are compared with the output parameters which are prescribed by the manufacturer. Verification of the relevance of declared parameters is supported by measurements on the mentioned device and their evaluation.
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