J. Phys. Colloques
Volume 49, Numéro C8, Décembre 1988Proceedings of the International Conference on Magnetism
|Page(s)||C8-1915 - C8-1919|
J. Phys. Colloques 49 (1988) C8-1915-C8-1919
THE PREDICTION OF POWER LOSSES IN SOFT MAGNETIC MATERIALSG. Bertotti1, F. Fiorillo1 et G.P. Soardo2
1 Istituto Elettrotecnico Nazionale Galileo Ferraris, GNSM-CNR and CISM-MPI, I-10125 Torino, Italy
2 Dipartimento di Anatomia e Fisiologia dell'Università, I-10125 Torino, Italy.
Deterministic methods studying the losses due to the motion of single Bloch walls or of well defined domain structures yield equations of limited accuracy, which only provide some hints as to the trend of power losses in different materials. These results are compared with the ones obtained through a recently developed statistical treatment of the loss processes, which predicts with good precision hysteresis and dynamic losses vs. frequency and induction, on the basis of a very limited input information.