Implementation of the modified Preisach scalar model in the finite difference–time-domain numerical modeling

Abstract

In this paper, we present a numerical procedure capable of analyzing dynamic hysteresis in axial-symmetric problems. The procedure is based on the implementation of the modified scalar Preisach model (MSPM) in a finite difference–time-domain algorithm. The identification of the Preisach function in the MSPM is obtained through experimental measurements of the virgin curve and of the major loop. Simulations have been performed on systems operating at extremely low frequency under the hypothesis of negligible effects related to the displacement current and assuming as input source the magnetic field value at the one surface of the cylindrical domain under analysis.