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Analysis of Electrical Steel Additional Losses Caused by Stacking Holes
 Kozlíček, Jiří ; Bílek, Vladimír (referee) ; Mrajca, Miroslav (advisor)
This bachelor's thesis deals with the analysis of losses in the electrical steel sheets of a distribution transformer, particularly the losses around stacking holes, which are used for stacking individual sheets during production. The thesis also includes standardized methods according to IEC 60404-2, 60404-3, and 60404-10, which can be used to determine the magnetic properties of materials used in transformers. Part of the thesis is the evaluation of the given issue using the finite element method, with the help of the Ansys program. Simulation models of 3 different types of sheets, which are commonly used in practice are designed in this program. The conclusion then focuses on quantifying the additional losses due to stacking holes, which is further discussed.
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