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Low power electrical machines
Martinek, Radek ; Mach, Martin (referee) ; Hájek, Vítězslav (advisor)
The master’s thesis introduces various types of electric motors. Overall, it is divided into 6 chapters, which the first deals with special type of electric motors, namely: permanent magnet DC motor with coreless winding, piezoelectric motor and three phase induction motor with solid rotor. For all of these motors are introduced principles, types, advantages, disadvantages and applications. The second part of thesis deals with perspective types of motors, namely: single phase induction motor and reluctance motor. For all of these motors are introduced principles, types, advantages, disadvantages and applications. The third chapter deals with analysis parameters of single phase induction motor. The analysis is performed on a borrowed motor from ATAS company by measurement and verification using simulation program Ansys Maxwell. The fourth part discusses the possibilities of increasing the effectiveness of borrowed electric motor. The following is chapter five, which deals with increasing the efficiency of the motor by changing metal sheets. Results are verified by simulations with Ansys Maxwell and measurements on sample of electric motor. The last part presents electric motor design with new selected electric sheets with lower specific losses, but also with lower magnetic induction.
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An induction machine with solid rotor
Fišer, Jan ; Klíma, Jiří (referee) ; Mach, Martin (advisor)
This master’s thesis is focused on induction motor with solid rotor. The introduction is dedicated to the full analysis of the rotor. Then model of motor with solid rotor was designed in 2D and 3D. Simulations of these models were carried out using the finite elements method. Further in this thesis there are laboratory measurements` results due to the motor`s sample. Based on the results from simulations and measurements rotor modifications have been proposed, which led to improved machine parameters. 2D models have been developed by rotor modifications. These models went through finite elements method`s simulation. In the conclusion of the thesis there are all results from measurements and simulations compared.
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Special small induction motor
Trubák, Vojtěch ; Mach, Martin (referee) ; Hájek, Vítězslav (advisor)
This term paper is focused on theory and calculation of an induction motor with solid rotor. It is divided into six chapters, the first one being an introduction and the last being a conclusion. Second chapter is dedicated to magnetism. There is briefly description of a skin depth of a conductor and calculation method for impedance of a conductive solid. Third chapter is focused on theory of an induction machines, their construction, equivalent circuit and some of their properties. Fourth chapter is dedicated to calculation of an induction motor with solid rotor and its parameters. Fifth chapter is comparing results of calculation done in fourth chapter for an already existing motor with measured values.
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Design of a High-speed Solid-rotor Asynchronous Generator for an Expansion Turbine
Pribulla, D. ; Vítek, O.
In this paper, an electromagnetic design of a slitted solid-rotor high-speed generator is presented. Recommendations for an analytical preliminary design were summarized. The design was further optimized using 2-D finite element method. The power of the machine is 6.15 kW at 150 000 rpm and 2% slip. An efficiency of 90% was reached, despite of high eddy losses in the machine rotor. Our design may prove to be a cost-effective alternative to the permanent magnet synchronous machine in the cryogenics application after the thermal and mechanical analysis.
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Sensitivity Analysis Of An Induction Machine With A Solid Rotor
Bílek, Vladimír
The main focus of this paper is to show the results of sensitivity analysis of an inductionmachine with a solid rotor. For the case study, a three-phase induction machine with a squirrel cage ischosen. However, the rotor of this machine is replaced with an axially slitted solid rotor. The electromagneticmodel is analyzed by transient simulation using the FEM-based program Ansys maxwell.For the sensitivity analysis, several parameters are changed in a wide range to see the difference inthe machine overall performance. Some of the results of these simulations are shown and discussedat the end of this paper.
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Thermal Analysis Of Solid Rotor Coated With Copper Layer
Súkeník, Jakub
This paper deals with thermal calculations of rotor of a high-speed machine. The first part describesthermal network and the basic relationships for the calculation of thermal resistances. In the secondpart, the rotor thermal network for a high speed machine is designed. Next, this thermal networkof the rotor is compared with the thermal model of a rotor created in Ansys software.
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Finite Element Analysis of High Speed Induction Motor With Axially Slitted Rotor
Klíma, Jiří
This paper deals with an analysis of three phase, two pole high speed induction machine with axially slitted solid rotor. The finite element model of induction motor with axial slits has been developed and motor has been analyzed for several slips in order to get performance characteristics. Setting the simulation is crucial and will be discussed. All-important fields and performance characteristics are presented.
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Special small induction motor
Trubák, Vojtěch ; Mach, Martin (referee) ; Hájek, Vítězslav (advisor)
This term paper is focused on theory and calculation of an induction motor with solid rotor. It is divided into six chapters, the first one being an introduction and the last being a conclusion. Second chapter is dedicated to magnetism. There is briefly description of a skin depth of a conductor and calculation method for impedance of a conductive solid. Third chapter is focused on theory of an induction machines, their construction, equivalent circuit and some of their properties. Fourth chapter is dedicated to calculation of an induction motor with solid rotor and its parameters. Fifth chapter is comparing results of calculation done in fourth chapter for an already existing motor with measured values.
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Low power electrical machines
Martinek, Radek ; Mach, Martin (referee) ; Hájek, Vítězslav (advisor)
The master’s thesis introduces various types of electric motors. Overall, it is divided into 6 chapters, which the first deals with special type of electric motors, namely: permanent magnet DC motor with coreless winding, piezoelectric motor and three phase induction motor with solid rotor. For all of these motors are introduced principles, types, advantages, disadvantages and applications. The second part of thesis deals with perspective types of motors, namely: single phase induction motor and reluctance motor. For all of these motors are introduced principles, types, advantages, disadvantages and applications. The third chapter deals with analysis parameters of single phase induction motor. The analysis is performed on a borrowed motor from ATAS company by measurement and verification using simulation program Ansys Maxwell. The fourth part discusses the possibilities of increasing the effectiveness of borrowed electric motor. The following is chapter five, which deals with increasing the efficiency of the motor by changing metal sheets. Results are verified by simulations with Ansys Maxwell and measurements on sample of electric motor. The last part presents electric motor design with new selected electric sheets with lower specific losses, but also with lower magnetic induction.
|
|
|
An induction machine with solid rotor
Fišer, Jan ; Klíma, Jiří (referee) ; Mach, Martin (advisor)
This master’s thesis is focused on induction motor with solid rotor. The introduction is dedicated to the full analysis of the rotor. Then model of motor with solid rotor was designed in 2D and 3D. Simulations of these models were carried out using the finite elements method. Further in this thesis there are laboratory measurements` results due to the motor`s sample. Based on the results from simulations and measurements rotor modifications have been proposed, which led to improved machine parameters. 2D models have been developed by rotor modifications. These models went through finite elements method`s simulation. In the conclusion of the thesis there are all results from measurements and simulations compared.
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