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Creation of GUI for optimization of electrical machines
Bártková, Tereza ; Klíma, Petr (referee) ; Knebl, Ladislav (advisor)
This work follows the development process of graphical user interface (GUI) spanning from choosing the right tools for implementation to the implementation itself. The purpose of the work was making the optimization program user-friendly by creating a communication layer between the optimization algorithm and the user and demonstrating its functions. First of all, the study of various programming languages and their toolkits regarding GUI programming was undertaken. Python was chosen because the original program is written in it, also software development in Python is probably the quickest one. Furthermore there are analyzed characteristics of this language and PyQt, which is a tool meant for GUI creation. The third chapter introduces very thoroughly the issues of electrical machines and their optimization. Introduction of these issues is followed by brief description of two optimization methods being used in electrical machines optimization. Following chapter introduces the actual machine under the optimization study, on which the final program was tested. Afterwards follows detailed description of application layout created in Qt Designer. New program structure enriched with graphical user interface is described and its functions are shown. Finally there is a guideline on how to use this program and the optimization is executed accordingly. Also, the results of the optimization are analyzed.
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Torque-speed characteristic optimization of an induction machine using machine learning
Bártková, Tereza ; Klíma, Petr (referee) ; Bílek, Vladimír (advisor)
Purpose of this work is optimization of given electrical machine based on combination of selected methods. The first chapter introduces machine learning in general. Its fundamental approaches and typical problems are analyzed together with some of the actual algorithms. The topic of optimization is introduced in the following chapter - its purpose and explanation of its concepts. The limitations we face while optimizing designs are demonstrated on two basic methods. Several popular algorithms are described, that could possibly be used in the context of electrical machines' optimization. One of the goals is reached in the third chapter - the choice of machine learning method in combination with optimization algorithm. The fourth chapter deals with matters of creating the induction machine geometry and subsequently its electromagnetic model for the following analysis. Details of geometric dimensions and electromagnetic parameters are introduced as well as calculation of end winding leakage inductance, one phase winding resistance and resistance and inductance between bars. There is also a brief description of the tools used for creating the model. The next chapter presents results of the electromagnetic analysis of the model. The process of creation on surrogate models of a given machine is described in the sixth chapter. It comprises the sensitivity analysis, creation of the initial training data and active learning. Next chapter deals with the optimization of the given machine utilizing surrogate models and selected optimization algorithms. The last chapter compares original machines' characteristics to those of optimized geometries.
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Creation of GUI for optimization of electrical machines
Bártková, Tereza ; Klíma, Petr (referee) ; Knebl, Ladislav (advisor)
This work follows the development process of graphical user interface (GUI) spanning from choosing the right tools for implementation to the implementation itself. The purpose of the work was making the optimization program user-friendly by creating a communication layer between the optimization algorithm and the user and demonstrating its functions. First of all, the study of various programming languages and their toolkits regarding GUI programming was undertaken. Python was chosen because the original program is written in it, also software development in Python is probably the quickest one. Furthermore there are analyzed characteristics of this language and PyQt, which is a tool meant for GUI creation. The third chapter introduces very thoroughly the issues of electrical machines and their optimization. Introduction of these issues is followed by brief description of two optimization methods being used in electrical machines optimization. Following chapter introduces the actual machine under the optimization study, on which the final program was tested. Afterwards follows detailed description of application layout created in Qt Designer. New program structure enriched with graphical user interface is described and its functions are shown. Finally there is a guideline on how to use this program and the optimization is executed accordingly. Also, the results of the optimization are analyzed.
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