Viscosity-based magnetodynamic model of soft magnetic materials

Connection between microstructure and magnetic properties of soft magnetic materials

“…The dynamic Preisach mode can be useful in this respect too. More recent developments along a different line [46] are particularly suited to the description of electrical steels.…”

Iron Losses in Electromagnetic Devices: Nonlinear Adaptive MEC & Dynamic Hysteresis Model

“…• Preisach hysteresis model in its both static [10] and dynamic [11], [12] versions; • Opera hysteresis model [13], [14] available in the commercial Opera simulation software of COBHAM society (from UK); • Viscosity-based magnetodynamic model [15]; • So-called improved vector play model [16] which recently has been successfully implemented in 2-D and 3-D transient FE solvers of ANSYS corporation (e.g., Maxwell software).…”

Comparison of engineering methods of loss prediction in thin ferromagnetic laminations

“…Although the loss can be predicted quite accurately by means of finite-element or finite-difference (FD) solvers of appropriate Maxwell equations [1], the simplified engineering methods applicable to a bulk material remain of considerable significance, and new predictive techniques appear periodically in the literature. The term engineering means that the methods can be implemented on a calculator or by means of library procedures available in most mathematical packages.…”

“…The latter necessitates a formula representation of W clas and W exc , which requires the use of the material resistivity r and lamination thickness d. The possibilities and limits of the methods above in predicting dynamic loss are discussed in this paper. To avoid the inaccuracies caused by minor hysteresis loops, the same static hysteresis model [1] is used to evaluate hysteresis loss W h in testing the methods.…”