Title: Benchmark for the eddy current problem in laminated iron cores
Other Titles: Benchmark für das Wirbelstromproblem in geschichteten Eisenkernen
Language: English
Authors: Silm, Haik Jan 
Qualification level: Diploma
Advisor: Schöberl, Joachim 
Assisting Advisor: Hollaus, Karl 
Issue Date: 2016
Number of Pages: 49
Qualification level: Diploma
A new benchmark for the eddy current problem in laminated iron cores is designed to evaluate homogenization methods based on the finite element method. To this end the variational form is derived to solve the nonlinear problem. In this work, in extension to excite the coil with a current source, a voltage source is used and in this case the current is treated as an unknown. The solution method needs to be extended accordingly. To facilitate the modeling of the laminated iron core hexahedral finite elements have been employed. The Biot-Savart field has been exploited to avoid the modeling of the cylindrical coils. In summary, a nonlinear problem with network coupling is solved utilizing the Biot-Savart field. To calculate the time-domain solution the resulting nonlinear equation system consisting of over 16 million degrees of freedom is solved in each time step. A Newton method is used with a line search technique. The design procedure of the benchmark is described, highlighting the key requirements. The simulation results show that the requirements are fulfilled. Measurements taken from a simple setup are also presented.
Keywords: Benchmark; Wirbelstromproblem; Eisenkerne; FEM
Benchmark; Eddy Current Problem; Iron Cores; FEM
URI: https://resolver.obvsg.at/urn:nbn:at:at-ubtuw:1-8622
Library ID: AC13372838
Organisation: E101 - Institut für Analysis und Scientific Computing 
Publication Type: Thesis
Appears in Collections:Thesis

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