Influence of Magnetization Characteristics on Electromagnetic Force Analysis

This paper evaluates the influence on electromagnetic force analysis of the difference between the magnetization characteristic used for calculation and the real characteristic. The electromagnetic force is calculated by Maxwell´s stress tensor method and the virtual magnetic charge method. The magnetic field used in these methods is analyzed by FEM, using a magnetization characteristic. Comparison of the results calculated using a magnetization characteristic and those calculated using the transformed characteristics shows that the influence of the magnetization characteristic is small at low reluctivity, and is independent of the fineness of the FEM mesh. In addition, there is little difference between methods for calculating the electromagnetic force with regard to the influence of the magnetization characteristic.