Electromagnetic analysis of a PMSM with different rotor topologies

This paper realizes a study of the influence of specific rotor design parameters on the permanent magnet synchronous machine (PMSM) electromagnetic behavior. The study is carried out in a FEM analysis environment. Four permanent magnet synchronous machines with the same stator and different rotor topologies have been simulated and their electromagnetic characteristics are compared to each other. The rotor topologies with surface-mounted magnets, magnets embedded in the surface, tangentially embedded magnets and cross buried magnets are considered. The simulations performed offer an insight and comparison between the four motors electromagnetic variables and behavior under no load and full load with two different stator currents and the same speed operation.