Abstract
The magnetic properties of silicon steel sheets with a bias field are described. In the analysis, the magnetization characteristics under a sinusoidal-flux condition are approximated by the Fourier series, and it is assumed that the eddy current factor is proportional to the rate of change of the flux. The magnetization characteristics with a bias field are modeled by three magnetization curves under a sinusoidal-flux condition with a different maximum flux density. The iron loss, maximum value and harmonic component of exciting current are obtained by the numerical analysis of the relation between the dc current. The results of the analysis were confirmed by experiments, and are used to show the magnetic properties of a power transformer with a bias field using magnetic properties under a sinusoidal-flux condition.
