A ROTOR CONSISTING OF TWO IRON CYLINDERS FOR SWITCHED RELUCTANCE MOTORS

Eyhab El-kharashi

   The shaft in a conventional switched reluctance motor with multi-rotor teeth fills up a relatively high interior volume. However, it does not contribute in producing any torque. It is there only for mechanical purposes. Additionally, the conventional toothed rotor produces high torque ripples. These two points force to come up with a new design for the switched reluctance motor rotor that can rotate inside the stator without a shaft while grading the reluctance of the air gap to produce an output torque with low ripples. This paper introduces a new rotor design that consists of two solid iron cylinders. In the proposed design, there is no need for the shaft. The use of two cylinders grades the air gap, consequently producing a torque with low ripples.

Keywords: finite element methods, flux linkage characteristic, rotor design, switched reluctance motors, torque characteristic

[full-paper]