Nonlinear Eddy Current Theory
Note: The information in this topic is applicable to both Maxwell 2D and 3D Eddy current solvers.
Unlike linear problems in which the field solution is assumed to be based on the sinusoidal complex peak field values in a steady state, nonlinear problems are usually based on all harmonic components of the fields.
That is to say for nonlinear problems, though the current is sinusoidal at its input, the resulting fields are “harmonically rich.” Although the B- and H-fields are not sinusoidal at output, the Maxwell 2D and 3D nonlinear eddy current solvers use equivalent fundamental components of B and H to approximate nonlinear field behavior associated with the assigned nonlinear B-H characteristic.