Equivalent magnetic circuit method usage in the synchronous reluctance machine rotor design

Abstract

The subject of this paper is the proper calculation of the magnetic field in the inner flux barrier synchronous machine rotor by the usage of the equivalent magnetic circuit method. The method is applied on the two pole machine and its accuracy depends on the complexity of the magnetic circuit model. The nonlinear BH curve of the electric steel is approximated by a continuous function. Then magnetic fluxes of all paths are calculated. The equivalent magnetic circuit method enables the group calculation of different flux barrier arrangement and finding the best initial solution which can be then optimized by the finite element analysis.