Analytical Calculation Of Armature-Reaction Field In Surface-Mounted Permanent-Magnet Machines Accounting For Slots In Stator And Rotor

In this paper, an analytical method for predicting the armature-reaction field distribution of surface-mounted permanent-magnet machine accounting for slots in the stator and rotor was presented. The analytical model is divided into three types of subdomains. And the field solution of each subdomain is obtained by applying the interface and boundary conditions. The non-overlapping or overlapping windings are also considered. The prototype machine with 4-poles/24-stator slots/20-rotor slots is used for validation. The FE (finite element) results confirm the validity of the analytical results with the proposed model.