Abstract

This paper presents the determination of a numerical indicator that allows the quick comparison of the cogging torque in permanent magnet synchronous machines (PMSMs) with both segmented stator and conventional stator structures, considering different pole/slot combinations. By means of two-dimensional finite element simulations of 18 different machine designs, it was proven that comparison indicators used for conventional PMSMs cannot be implemented for PMSMs with segmented stator core. Instead, the proposed indicator considers the change of periodicity in PMSMs with segmented stator core and enables two relevant phases of the design stage of the PMSMs: the effective comparison of the magnitude of the torque cogging for different pole/slot combinations on segmented machines; and the comparison between PMSMs with conventional stator and segmented stator.