Definition and application of magnetic material metrics in modeling and optimization

The modeling of magnetic components for use in electrical circuit simulatio n requires that the core material be accurately characterized. This paper i nvestigates a method of extracting parameters to model the hysteresis behav ior of magnetic core materials and optimizing them to achieve accurate resu lts during circuit simulation. Metrics are defined to measure specific feat ures of the behavior of both the core magnetic material and the magnetic co mponent, such as a transformer. This paper presents a method of applying th ese metrics for the purposes of comparison and optimization and demonstrate s the method using measured results and corresponding simulations. It compa res the effectiveness of a weighted metrics function with that of a least s quares goal function for the purpose of optimization. This paper suggests m odifications to the original Jiles-Atherton model to improve the ability of the model to more accurately represent the behavior of magnetic materials during saturation.