Design solutions to minimize iron core loss in synchronous reluctance motor using Preisach model and FEM

This paper deals with an automatic design procedure for the minimization of iron core loss in a synchronous reluctance motor (SynRM). The focus of this paper is the design relative to hysteresis loss on the basis of rotor shape of a SynRM in the same torque density. The coupled finite-element analysis and Preisach model have been used to evaluate the iron core loss with the rotor shape. The proposed procedure allows definition of the rotor geometric dimensions starting from an existing motor or a preliminary design. The iron loss has been reduced with a rotor design variation.