Analysis and measurement of iron loss and linkage flux inside nonlinear magnetic steel

This paper investigates the iron loss and interlinkage flux inside magnetic steel, and presents some new benchmarking results based on the overly excited member-model of problem 21 family. The conventional quasi-nonlinear approach (QNA), which is usually effective to solve the problems with lower saturation level, is re-examined and improved for the purpose of industrial application. It is indicated that the enhanced QNA provides good results for saturation problems over a suitable range, referred to as quasi-saturation domain. A new laminated core model is proposed for further modeling the heavily saturated magnetic material.