Flux penetration and losses in steel plate with sinusoidal magnetisation

A method is described to predict the steady-state core loss of, and the flux penetration into, a steel plate, including both hysteresis and eddy-current effects. The family of hysteresis loops obtained with a ferromagnetic material at different levels of magnetisation is represented by a simulation technique, previously described, which requires a set of three nonlinear characteristics only. By using a multilayer approach, the profiles of flux density and magnetising force in the plate are computed. Good agreement was obtained between measured and predicted values of loss and the fundamental and harmonic components of flux with a sinusoidal time-varying surface magnetising force.