A COUPLED VECTOR-SCALAR POTENTIAL METHOD FOR PERMANENT-MAGNET MODELING IN LARGE-SCALE 3D-FE MAGNETIC-FIELD COMPUTATIONS

This paper introduces a magnetic scalar potential (MSP) formulation to model permanent magnet volumes. This formulation is suited for use in coupled vector-scalar magnetic potential (CMVP-MSP) 3D-FE computation s of large-scale magnetic field problems in electric machinery and dev ices. Also, a new approach for direct calculation of armature winding flux linkages and associated induced emfs, from 3D-FE solutions, using stored energy and excitation function perturbation techniques, is int roduced in this paper. A caw study permanent magnet brushless dc machi ne was used to demonstrate the utility of this method.