Experimental checking of the coenergy model using a rotating field device

Abstract

To get the best out of simulation tools for magnetic field analysis, such as the finite element method, accurate magnetization law models are needed. In the case of grain-oriented SiFe sheets, the interdependences between the field vector H and the induction vector B are rather complex and difficult to describe. A theoretical model of nonlinear anisotropic behavior of the sheet is proposed, and its validity is tested in this paper by comparing it with experimental data measured on a rotating field single-sheet tested. We point out the decoupling of the magnetization process at low fields as well as the emergence of the hard magnetization direction at 54.7°, at higher fields. Three magnetization states when the magnetic field is at around 65° from the rolling direction have been shown.