Dynamic simulation of ferromagnetic hysteretic behaviour by digital computer

Abstract

A model is presented which produces the locus on the B-H plane of a ferromagnetic specimen subject to dynamic operating conditions. The model accurately represents the magnetisation curve and the saturation Zoop as well as exhibiting the correct inner loop behaviour. The concept of a primitive magnetic eZe ment is introduced, and the paper illustrates how a finite number of these elements may be combined and their characteristics chosen so as to represent the hysteretic behaviour of a ferromagnetic device. Validation is achieved by comparing experimental and computed results for both symmetrical and asymmetri caZ inner Zoop behaviour. The incremental inductance of an electro-magnetic device may be readily calculat ed from the proposed model which is presented in a form suitable for either digital or analog computer simulation.