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Design of a high-speed electrical machine.
Šolc, Martin ; Klíma, Jiří (referee) ; Mach, Martin (advisor)
This diploma thesis is dedicated to design of highspeed induction motor with power 30 kW, 60 000 rpm. In the beginning of the thesis basic problematic of highspeed motors, used materials and motor types is discussed. The practical part of the thesis concerns design of the motor itself, creating a model in ANSYS Maxwell software, performing several simulations and optimalization of the designed machine. In the last parf of this thesis each simulation is evaluated and the final model of the machine is introduced.
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Stator Windings Currents Analysis Of The Ipm
Machine Under Short-Circuit Conditions
Knebl, Ladislav
The development of the synchronous motors with permanent magnets is, mostly thanks to the legislation pressure to achieve the highest efficiency in electric drives, experiencing raising interest. Since the number of motors used in the industry is growing year by year, it is reasonable to investigate the motor behavior under faulty conditions, such as short-circuit conditions. This paper deals with the stator current analysis of interior permanent magnet synchronous motor under the short-circuit condition, both short-circuit in one phase and symmetrical three-phase short-circuit.
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Design of Line-start synchronous machine
Lolová, Iveta ; Klíma, Jiří (referee) ; Bárta, Jan (advisor)
This thesis deals with line-start permanent magnet synchronous motor, because in these days the world focuses on energy saving more than ever. Line-start permanent magnet motors represents a possible replacement for asynchronous motors, which are the most used kind of motors and constitute one of the greatest energy consumption apparatuses in the world. The efficiency improvement of induction motors is usually achieved through design optimization of induction motors resulting in limited degrees of success. This thesis also thoroughly explains LSPMSM topology and compares properties of the line-start permanent magnet motors and asynchronous motors. This thesis deals with the design of line-start permanent magnet synchronous motor based on previously designed asynchronous motor. In the last chapter LSPMSM is investigated in RMxprt and Ansys Maxwell.
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Induction machine design software
Rúra, Dávid ; Mach, Martin (referee) ; Bárta, Jan (advisor)
This thesis is dealing with design algorithm of squirrel cage machines with TEFC design focusing on electromagnetic and thermal design. This type of machine is mostly used in the industry because of its specific properties. Design TEFC machines are supported by year-tested analytical calculations with high accuracy. The aim of this work is to decrease human factor in the design process implementing algorithms and optimization.
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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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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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Claw-pole automotive alternator design.
Szekeres, Vojtech ; Mach, Martin (referee) ; Hájek, Vítězslav (advisor)
The thesis deals with the alternators used in passenger cars, their desing, function and typical behaviours and characteristics and design. Alternators are specific with the trapezoidal shape of rotor poles, which produce a waveform similar to a square wave instead of a sinusoid. This is more desirable for simple rectification to direct current, which is used in the electrical distribution system of automobiles. Because of the shape of the poles, these alternators are also called the claw-pole. The design itself consists of creating an alternator in Ansys Maxwell software in compliance with real measured alternator. The results are compared numerically and also graphically.
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Parameter analysis of single-phase transformer
Russ, David ; Mach, Martin (referee) ; Cipín, Radoslav (advisor)
The aim of Bachelors thesis is to focus on the principle of a transformer using finite element method. I will focus on single-phase transformers with low power. On the specified types of transformers are made complete proposal of individual parameters, which are then compared with the results simulated using program. In ANSYS Maxwell were 2D models created according to the real transformers and subsequently simulated their behavior under no- load and short-circuit. In conclusion the mutual comparison between different types of transformers.
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Design of high speed induction motor 350kW, 40000r.p.m.
Karásek, Ladislav ; Vítek, Ondřej (referee) ; Ondrůšek, Čestmír (advisor)
This thesis deals with the problem of the high-speed electrical machines. In the introduction summary of the high-speed machines are discussed. Induction machine with squirrel cage winding and solid rotor is chosen as suitable solution for given requirements. The multiple types of designs of the induction machines with solid rotor and problematic areas are discussed. Main part of this thesis is an electromagnetic design of the machine with respect to mechanical stress. The designed machine is analyzed with the use of finite element method in ANSYS Mechanical and Maxwell software.
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