Optimal cross-section of three-phase interior permanent magnet synchronous motor

Permanent magnet synchronous motors have been widely used in many industrial applications. This paper presents an optimization strategy for the cross-section of three-phase interior permanent magnet synchronous motor with maximum motor torque. The optimization strategy includes several steps, stator windings configuration, currents in the stator windings, and the design parameters of the slot tooth in the stator and permanent magnet in the rotor are consequently defined. The optimization strategy results provides the optimized stator and rotor geometrical dimensions and the influence of the air gap variation, are discussed. The optimization calculation has been performed by means of the finite element magnetic method. This strategy leads to the reduction of manufacturing costs for the motor of the same overall dimensions.