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Design of PMSG for micro hydro power plant
Skurka, Tomáš ; Ondrůšek, Čestmír (referee) ; Huzlík, Rostislav (advisor)
This bachelor’s thesis deals with a design and simulation of various implementation of the synchronous generator for a low-speed waterwheel. The construction of the generator was implemented as the radial synchronous generator with the permanent magnets on the rotor’s surface. In the introduction the reader gets familiar with the theory describing the construction of the synchronous generator with the permanent magnets intended for the small hydroelectric power plants. Within the thesis the author shows his own design of the generator and the optimization using the genetic algorithm. Next, three proposals with the predefined sheets are presented. Every single proposition of the generator was simulated in the software ANSYS Maxwell. Finally, the heat calculation was made for the certain designed variations of the generator.
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DC motors for general purposes.
Randa, Daniel ; Janda, Marcel (referee) ; Hájek, Vítězslav (advisor)
This work deals with innovation DC permanent magnet motor for low power. The work is divided into three tasks. The first part is to survey serially produced DC motors. The second part is to choose one particular DC motor drawn from the survey and carry out its analysis and detailed description. The last part is to design innovations to selected DC motor.
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Design of permanent magnet generator
Štencl, Michal ; Huzlík, Rostislav (referee) ; Ondrůšek, Čestmír (advisor)
This thesis deals with electromagnetic design of synchronous generator with permanent magnets. The aim of this work is verify already made prototype of generator, which after testing has problem with warming of permanent magnets and winding. The work includes electromagnetic design of the machine, simulation through RMxprt and comparison with prototype of generator. The thesis includes also simulations operating conditions through Maxwell 2D and Maxwell 3D.
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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 part of this work is performed analytical calculation of the two types of engines, with concentrated winding, created models based on calculations in FEMM focusing on the creation of spatial harmonics. Further the model in RMxprt and data from the simulations were compared with analytical computation. Finally the model was created in Maxwell and compared with the analytical results of calculation and simulation in RMxprt program. For this model was created analysis of losses in permanent magnets.
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Design and modernization of automotive starter
Bednář, Vojtěch ; Mach, Martin (referee) ; Hájek, Vítězslav (advisor)
The work deals with modernization of an automobile starter. In first and second part, we can find the analysis of types of starters according to construction and the analysis of gear of a starter. In third part, there is the analysis of electromagnetic layout of direct current motor with permanent magnets according to given parameters which is the gear of given starter.
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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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Automotive Electric Motors Innovation
Vejtasa, Leoš ; Kuchyňková, Hana (referee) ; Hájek, Vítězslav (advisor)
There are a lot of electric motors for different applications in a car. Some of the cars contain over 50 electric motors. The majority has direct current motors. In this semestral thesis there are described all types of direct current motors used in the car and their applications in the car. You can also find here the ways of development of direct current motors in the near future. There is also an analysis of the issue of permanent magnets use in DC motors and their construction scheme.
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Effect of Manufacturing Variations of Permanent Magnets in Surface-Mounted Permanent Magnet Motors
Vícha, Adam ; Mach, Martin (referee) ; Bárta, Jan (advisor)
Master’s thesis summs up issues of mounting pemanent magnets on rotor surface of permanent magnet synchronous machine. Literature reseach is divided in two parts. First one shows studies and experiments researching the impact of manufacturing tolerances of permanent magnets and wrong mounting on the rotor on cogging torque . The second part focus on analytical aproach of defining influence of permanent magnets on magnetic flux density in the air gap and phase induced voltage. Practical part focus on design of a prototype machine, wich will be used to research the impact of tolerances and imperfections. Parametric model of the prototype machine is created in Maxwell and is subjected to analysis via finite element method. Three different analysis were run, offset of permanent magnet, decrease and wrong dicertion of magnetization. At last the result of cogging torque and induced voltage are compared.
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Electromagnetic damper
Mikyska, Jan ; Huzlík, Rostislav (referee) ; Ondrůšek, Čestmír (advisor)
The main task of this bachelor´s thesis is the selection of structural design of electromagnetic damper with Halbach array to achieve the maximum output voltage for charging batteries. The thesis also contains a selection of specific design of damper from patent searches, simulations of magnetic induction in different versions of dampers in software Ansoft Maxwell, calculation of the induced voltage in an air coils and selection of the best 3D model of damper.
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Thermal Calculations of Permanent Magnet Motors in High Current Technology
Deeb, Ramia ; Singule, Vladislav (referee) ; Duroň,, Jiří (referee) ; Aubrecht, Vladimír (advisor)
Práce se zabývá výpočty magnetických a tepelných vlastností servomotoru s permanentními magnety (motor M718 I vyráběný firmou VUES s.r.o. v Brně). Všechny uvedené výpočty jsou založené na numerických metodách konečných prvků a konečných objemů. 2D magnetická analýza motoru byla řešena s pomocí programu FEMM, zatímco pro 3D analýzu byl využit software ANSOFT. Magnetické analýzy umožnily stanovit rozložení magnetického pole v motoru a ve vzduchové mezeře. Ztráty způsobené vířivými proudy byly počítány v závislosti na rozměrech permanentních magnetů a velikosti toku magnetické indukce ve vzduchové mezeře. U 3D modelu v programu ANSOFT byly vypočítány i Joulovy ztráty. Pro daný servomotor byly navrženy dva způsoby chlazení. V prvním případě se jedná o vnitřní chladicí systém. K původnímu modelu motoru byly přidány některé modifikace (otvory v rámu motoru a radiální ventilátor na hřídeli uvnitř rámu motoru). U druhého způsobu chlazení bylo navrženo vnější chlazení. K původnímu rámu byly přidána chladicí žebra a radiální ventilátor na hřídeli vně rámu motoru. Výpočty proudění a tepelná analýza byly provedeny jak pro původní model motoru, tak i pro modifikovaný návrh (vnitřní a vnější chlazení) pomocí software ANSYS Workbench. Teplotní charakteristiky původního motoru byly měřeny různými senzory. Bylo provedeno porovnání experimentálně získaných výsledků s vypočteným teplotním modelem. Práce byla vytvořena v rámci doktorského studijního programu Elektrotechnika a komunikační technologie, obor Silnoproudá elektrotechnika a elektroenergetika. Podstatná část práce vznikla za podpory Centra výzkumu a využití obnovitelných zdrojů energie a výzkumných projektů CZ.1.05/2.1.00/01.0014 and FEKT S-11-9.
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