Abstract
In the paper, the mathematical model of coupled electromagnetic and
thermal phenomena in the pulse transformer taking into account the
magnetic hysteresis is presented. For the mapping of magnetic hysteresis,
Jiles-Atherton model is applied. In order to solve field equations, the
finite element method (FEM), "step-by-step" procedure and Newton-Raphson
algorithm are used. Software elaborated on this basis is used for analysis
of hysteresis loss in the core. Selected results of investigations are
shown.
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