Abstract

Synchronous reluctance machines with internal rotor flux barriers can be designed to have a high saliency. Permanent magnets inserted into the rotor flux barriers considerably increase the effective saliency. In comparison with the conventional synchronous reluctance machine, this permanent magnet assisted synchronous reluctance machine offers better torque capacity and power factors. A nonlinear finite element analysis is used to evaluate the parameters of a 5 kW machine with a field-weakening range of 5.33:1. The characteristics of both the conventional reluctance machine and the permanent magnet assisted reluctance machine are compared. The investigation of the complex stator inductance shows the high suitability of the concerned machine for an application in position-sensorless drives.

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