Complex Reluctivity and Dynamic Hysteresis Model for Soft Magnetic Composite Materials

Abstract

In this article, we derive a Cauer network reluctivity model for soft magnetic composite materials. The Cauer network components are closed-form expressions consisting only of such parameters that have a clear physical meaning. The parameters include particle permeability, particle conductivity, insulation permeability, insulation thickness, volume fraction, mean particle diameter, variance of particle diameters, and maximal particle diameter. The particle volumes are assumed to be beta-distributed. Since the model is a network, it is immediately available in both frequency- and time domains.