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Electromagnetic analysis and modeling of a solid rotor induction machine
Bílek, Vladimír ; Vítek, Ondřej (oponent) ; Bárta, Jan (vedoucí práce)
This Master's thesis deals with the electromagnetic analysis and modeling of a solid rotor induction machine. The work includes a state-of-review on the topic of high-speed electrical machines, with the description of their advantages and disadvantages compared to conventional electrical machines with gearboxes, division of high-speed electrical machines with solid rotors, and comparison of their advantages and disadvantages, where the emphasis is placed mainly on high-speed induction machines with solid rotors and their use and applications in industry. Furthermore, the work deals with methods of calculation of electrical induction machines with solid rotors. Thus, methods for analytical calculation and finite element calculation of induction machines with solid rotors are described here. Above all, the emphasis is placed on the finite element method in a 2D space using correction end-effect factors, which are divided and described in detail here. Based on the obtained literature, an electric machine with a solid rotor is calculated using electromagnetic FEM analysis. The calculation of the machine is automatized with Python script. As another main objective of this work is to describe the so called surrogate models, their advantages and disadvantages, their use in industry and especially the application of surrogate models to a electrical machines with a solid rotor. Using surrogate models, the case study machine with a solid rotor is then optimized using SymSpace and Optimizer. For the optimizations, 3 machine designs were considered and eventually compared with each other from an electromagnetic performance point of view.
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Topology optimization of the line-start synchronous machines
Lolová, Iveta ; Vítek, Ondřej (oponent) ; Bárta, Jan (vedoucí práce)
The master thesis deals with topology optimization of electrical machines and line-start synchronous reluctance motor. The master thesis includes a literature review on the state of the art of topology optimizations and line-start synchronous reluctance motor. The possible concepts for characterizing the investigated design space is described. The dependency of the final normalized Gaussian network on the distribution of Gaussian functions is analysed in detail. The evaluation algorithm of a single individual is created within this thesis. The algorithm manages communication between Ansys Maxwell and software tool SyMSpace. Moreover, the algorithm leads to reducing of the computational time due to the preselection of unfeasible geometries. Furthermore, the topology optimization of LSSynRM based on the normalized Gaussian network is performed and the results are discussed.
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Electromagnetic analysis and modeling of a solid rotor induction machine
Bílek, Vladimír ; Vítek, Ondřej (oponent) ; Bárta, Jan (vedoucí práce)
This Master's thesis deals with the electromagnetic analysis and modeling of a solid rotor induction machine. The work includes a state-of-review on the topic of high-speed electrical machines, with the description of their advantages and disadvantages compared to conventional electrical machines with gearboxes, division of high-speed electrical machines with solid rotors, and comparison of their advantages and disadvantages, where the emphasis is placed mainly on high-speed induction machines with solid rotors and their use and applications in industry. Furthermore, the work deals with methods of calculation of electrical induction machines with solid rotors. Thus, methods for analytical calculation and finite element calculation of induction machines with solid rotors are described here. Above all, the emphasis is placed on the finite element method in a 2D space using correction end-effect factors, which are divided and described in detail here. Based on the obtained literature, an electric machine with a solid rotor is calculated using electromagnetic FEM analysis. The calculation of the machine is automatized with Python script. As another main objective of this work is to describe the so called surrogate models, their advantages and disadvantages, their use in industry and especially the application of surrogate models to a electrical machines with a solid rotor. Using surrogate models, the case study machine with a solid rotor is then optimized using SymSpace and Optimizer. For the optimizations, 3 machine designs were considered and eventually compared with each other from an electromagnetic performance point of view.
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Topology optimization of the line-start synchronous machines
Lolová, Iveta ; Vítek, Ondřej (oponent) ; Bárta, Jan (vedoucí práce)
The master thesis deals with topology optimization of electrical machines and line-start synchronous reluctance motor. The master thesis includes a literature review on the state of the art of topology optimizations and line-start synchronous reluctance motor. The possible concepts for characterizing the investigated design space is described. The dependency of the final normalized Gaussian network on the distribution of Gaussian functions is analysed in detail. The evaluation algorithm of a single individual is created within this thesis. The algorithm manages communication between Ansys Maxwell and software tool SyMSpace. Moreover, the algorithm leads to reducing of the computational time due to the preselection of unfeasible geometries. Furthermore, the topology optimization of LSSynRM based on the normalized Gaussian network is performed and the results are discussed.
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