ANALYTICAL MODEL WITH FLEXIBLE PARAMETERS FOR DYNAMIC HYSTERESIS LOOPS MODELLING

Ivana Nová – Ivan Zemánek

   Analytical model was proposed to find simple mathematical approximation of dynamic hysteresis loops of soft magnetic materials. It is based on pure phenomenological approach and consists in dynamic loop construction from four components by means of mathematical functions. Favourable mimicking coefficients were searched, which depend on excitation amplitude and frequency. The nature of its behaviour was studied in order to be able to predict the loop shape. The model was tested for opened specimen of classic oriented silicon electrical steel at sinusoidal excitation, measured by means of KF9a compensation ferrometer.

Keywords: dynamic hysteresis loop, mathematical modelling, analytical approximation

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