Calculation Model of Armature Reaction Magnetic Field of Interior Permanent Magnet Synchronous Motor With Segmented Skewed Poles

In an interior permanent magnet synchronous motor (IPMSM) with segmented skewed poles, the armature reaction magnetic field (AR-MF) changes nonlinearly due to saturation of rotor barrier. Meanwhile, this varies under different excitation currents. As a result, it is difficult be calculated by means analytical methods. paper, calculation model AR-MF IPMSM first established vector superposition method, without considering effect and slotting stator. second step, virtual introduced quantitatively calculate influence local inhomogeneous on AR-MF. The latter derived combining both subdomain method equivalent circuit method. complex relative permeance also establish accounting for stator effect. To validate proposed, 8-pole 48-slot poles considered as case study, showing comparison finite element (FE) results electromagnetic torque measured test bench. proposed in paper shows high accuracy fast computation respect FE analysis.