A new design technique based on a suitable choice of rotor geometrical parameters to maximize torque and power factor in synchronous reluctance motors. II. Finite-element analysis and measurements

The influence of rotor geometry of synchronous reluctance motors (SRMs) on the x_d/x_q ratio, electromagnetic torque and iron losses is studied. Both air-gap length and rotor pole arc are taken into account as parameters. In the first part, a new theoretical approach was developed neglecting saturation effects. Here, the analytical determination of the parameters and the machine behaviour is performed for a particular SRM, on the statement of Part I, including saturation effects. Also a complete finite-element analysis is carried out, followed by a comparison with results obtained by tests performed in a prototype machine, which was constructed in order to validate the proposed methodology