Quantification of Required Multi-Segments for Accurately Computing Induced Voltage in a Ferrite Inductor Using Static and Dynamic Jiles-Atherton Models

Abstract

The Jiles-Atherthon model is suitable for modeling ferrite-core based inductors and transformers. In this paper it is used to quantify the influence of radially varying magnetizing field on induced voltage in a ferrite inductor, and to compare two conventional average models with a multi-segment model. To accurately model the core when its radial thickness is comparable with its average radius in which average models fail to work, multi-segmentation needs be adopted. In this paper quantification of required segments is presented for different ratios of outer to inner radii of a toroidal core. Such work is meaningful since the ferrite cores used in pulse transformers could be in the scale of meters and dimensional effect on induced voltage cannot be ignored.

Predicting the Impact of Magnetic Components Used for EMI Suppression on the Base-Band of a Power Amplifier

“…The most common magnetic material models including the hysteresis and saturation are : [27].The results from both are very similar, however, only the results of the JA model are presented here. The reason is because we have access on JA parameters for different magnetic materials and the parameters of the Chan et al model were deduced from the JA model simulating a given magnetic material.…”