E. Schmidt, W. Brandl:
"Comparative Finite Element Analysis of Synchronous Reluctance Machines with Internal Rotor Flux Barriers";
Poster: IEEE International Electric Machines and Drives Conference (IEMDC), Cambridge, USA; 06-17-2001 - 06-19-2001; in: "Proceedings", (2001), 831 - 837.

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.