A new approach to modeling of loss separation in grain-oriented Fe–Si laminations

A model of magnetic loss separation based on the distribution of relaxation times is suggested. If the magnetic flux excitation is sinusoidal and the magnetization process by planar 180° domain wall movement is dominant, then it is possible to separate the hysteretic and dynamic part of total losses analytically. The experimental verification of proposed model is performed on a set of grain-oriented laminations cut at various angles with respect to the rolling direction.