Finite Element Analysis of Three-Phase Three-Limb Power Transformers under DC Bias

Oszkar Biro, Gergely Koczka, Gerald Leber, Kurt Preis, Bernhard Wagner

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A finite element method for the analysis of three-phase, three-limb power transformers under dc bias is presented. The phase voltages and the dc components of the phase currents are assumed to be given. Using parallel algorithms, the steady-state periodic solution is obtained without stepping through the transients using a fixed-point method to solve the nonlinear equations. A novel technique to obtain the starting solution for the fixed-point iterations to ensure fast convergence is introduced. The solution to a large, real world problem is presented.
Original languageEnglish
Pages (from-to)565-568
JournalIEEE Transactions on Magnetics
Issue number2
Publication statusPublished - 2014

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  • Sustainable Systems

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