Study of anisotropic B¯-H¯ models for transformer cores

Electromagnetic modeling is, apart the improvement of magnetic materials themselves, one of the main ways for progress for electrotechnical designers. Toward this goal dissipative phenomena and anisotropy have to be well represented. In this paper, three anisotropic models known for their ability to be implemented in electromagnetic simulation tools are compared in anhysteretic conditions as in the case of grain oriented sheets to experimental data. In spite of a too strong 2D interactions representation, the coenergy model leads to the best qualitative description or anisotropic behaviour. Nevertheless none of these models seem to be expanded to the consideration of hysteric and eddy current processes, which will have to be taken into account through an explicit 2D anisotropic interaction term