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Konstrukce trakčního motoru elektrického vozidla
Dobiáš, Jaroslav
This bachelor's thesis deals with the design of an traction electric motor with an axial magnetic flux for an electric vehicle. The work has three main parts. The first part describes basic physical principles of electric drives. The second part describes the concept of electric motors with axial magnetic flux. The last part deals with mechanical and indicative electrical design calculation from which basic drawing documentation is subsequently created.
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Sledování vztahu hodnot charakteristických veličin a provozuschopnosti Wankelova motoru
Král, Milan
The thesis deals with the relations between the relevant characteristic variables and the operability of Wankel engine. There is a causal link between the wear of the rotor apex seals, the rotor housing and the crankshaft bearing due to non-compliance with the specific maintenance service, which is a key factor for trou-ble-free operation of this type of engine. The relationship between the number of kilometers traveled and the compression values on individual surfaces of the ro-tors are also analyzed. Formula clause:Affidavit I declare that I am doing this: Monitoring the relation between the values of the characteristic quantities and the serviceability of the Wankel engine Elaborated separately and all used sources and information are listed in the list of used literature. I agree that my work be published in accordance with § 47b of Act No. 111/1998 Coll., On Higher Education Institutions and on the Amendment and Supplementation of Other Acts (Higher Education Act), as amended, and in accordance with the applicable Disclosure Directive College final work. I am aware that my work is governed by Act No. 121/2000 Coll., The Copyright Act, and that Mendel University in Brno has the right to conclude a license agreement and to use this work as a school work according to § 60 Paragraph 1 of the Copyright Act. I further agree that before writing a license agreement for the use of the work by another person (entity), I shall request the University's written opinion that the license agreement in question is not in contradiction with the legitimate interests of the University and I undertake to cover any contribution to cover the costs associated with the origin of the work , Up to their actual amount.
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Strength Analysis of Turbocharger Rotor of Stationary Internal Combustion Engine
Kejval, Dan ; Kudláček, Petr (referee) ; Novotný, Pavel (advisor)
Turbocharger rotors are highly stressed components exposed to significant thermo-mechanical loads. This thesis provides a literature review of this issue concerning turbocharger rotors and focuses on the thermal field analysis and structural analysis of the turbocharger rotor of a stationary internal combustion engine under different steady-state operating conditions, especially under maximum thermo-mechanical load. The analysis was conducted using Ansys Mechanical software, which allows for the calculation of the thermal field as well as the identification and evaluation of critical areas of the rotor using the finite element method. The result of the thesis is an assessment of the rotor's safety, including the risk of loosening the rings preloaded on the rotor shaft.
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Modern Cooling Concepts of Electrical Machines
Lukášek, Jan ; Cipín, Radoslav (referee) ; Toman, Marek (advisor)
The thesis focuses on the research of modern concepts of cooling of electrical machines. The first part of the thesis deals with the origin and calculation of losses causing heating of electrical machines. The second part describes the mechanisms of heat transfer and basic relations of fluid mechanics. The third part describes the basic principles of cooling of electrical machines. The final part of the thesis describes modern concepts and innovations in cooling systems for electrical machines described in the third part and separate modern innovations.
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Low-speed Wind Turbines for Small and Medium Size Applications
Forró, Bálint ; Paar, Martin (referee) ; Procházka, Zdeněk (advisor)
Bachelor’s thesis deals with usage of slow-running wind turbines for small and medium applications, especially with Savonius rotor. In first part I described theoretical usage of wind and analysis of wind power plants. Next part describes advantages and disadvantages of Savonius wind rotor and its practical usage. Thesis is ended with engineering design of wind rotor of this type for according performance at specific wind speed.
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Wind power plant
Šponiarová, Petra ; Prokop, Aleš (referee) ; Řehák, Kamil (advisor)
The electricity production from renewable sources is a very current topic. It also includes the electricity made by wind power plants, which the bachelor’s thesis concentrates on. An extensive research study was conducted to provide an overview of wind turbine types. Concerning wind power plants, apart from their visual impact, noise and vibration connected to their operating is an often discussed issue. The construction of a wind turbine stands for the most important role in reducing such unwanted effects. Technical experiments following specific standards and recommendations are performed to assess the impact of wind turbines-emitted noise and vibration on humans. In order to assess noise and vibration of a wind turbine a technical experiment is proposed, which uses different approaches to determine the critical components. The selection of a suitable measuring equipment and the choice of location for its subsequent use are important parts of the design. At last, the use of wind power plants is critically reviewed.
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Rotor design of a Line-Start Synchronous Reluctance Machine for Industrial Applications
Žíla, Jakub ; Knebl, Ladislav (referee) ; Bárta, Jan (advisor)
This diploma thesis deals with design of rotor of synchronous reluctance machines. There is a theoretical description of rotor geometry of synchronous reluctance machine that respects natural flow of magnetic flux inside complete rotor. The parametric model of rotor is made with usage of ANSYS Maxwell and Matlab software. Furthermore, the parameters of the machines are confirmed using the same program. Finally, changes of motor parameters are observed in connection with different rotor geometries.
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Analysis of concentrated windings of PMSM
Menoušek, Lukáš ; Cipín, Radoslav (referee) ; Vítek, Ondřej (advisor)
This thesis deals with the design, principles of permanent magnet synchronous machines and an analysis of their properties. As part of the work is done familiarization with the materials of permanent magnets and their arrangement, as well as construction of the engine where they are discussed types of winding machine configuration, types of motors with permanent magnets and the list of implemented solutions. In the next section of this paper is an analysis of the properties of selected types of concentrated winding with a focus on the emergence of harmonics. These data are compared with the model of the engine in the FEMM. Furthermore, a comparison of the calculations of these types of engines and their simulation in RMxprt.
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Design of Laboratory Centrifuge for Sample Separation
Kašná, Marie ; Rubínová, Dana (referee) ; Fridrichová, Eva (advisor)
The project deals with the design of laboratory centrifuges with regard to aesthetic, ergonomic and technical parameters. Emphasis was placed on stability, ease of use and further possibilities for use. The project also includes an analysis of the current market. The resulting device design can be widely used, but is most suitable for small laboratories.
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Analysis of dynamic load from induction machine current signature
Pavláček, Jan ; Ondrůšek, Čestmír (referee) ; Huzlík, Rostislav (advisor)
This thesis focuses on the analysis of the dynamic behavior of the load from the measurement of stator currents of induction motor. Work is sorted from basic engine failures equations, mathematical models, types of signal processing, simulation and measurement. The practical part deals with the design of the motor model in Matlab Simulink, the simulated and the measurement of the pump BETA 12 YC On the Department of Fluid Engineering Victor Kaplan. Use appropriate types of signal processing evaluate the results. The aim of this work is to analyze the dynamic changes of the load.
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