The polarization fixed point method allows the harmonic uncoupling in the treatment of periodic fields in ferromagnetic media, thus exhibiting important advantages with respect to other methods. It always insures the procedure convergence, but the convergence is slow. An efficient technique with an improved rate of convergence, based on the dynamic overrelaxation method, is proposed. The polarization harmonics are directly corrected by the magnetic flux density harmonics. In order to reduce the computational and the memory effort, only the relation B-M between the magnitudes of the field vectors is used.

Keywords: Dynamic overrelaxation, Periodic nonlinear fields, Polarization fixed point method