Influence of stator geometry upon vibratory behaviour and electromagnetic performances of switched reluctance motors

The vibrations and the acoustic noise produced by switched reluctance motors (SRMs) are linked to current wave form and to their structural properties. The authors carried out a parametric study to quantify the influence of the stator geometry upon vibratory behaviour of a 614 SRM. Their study shows the important influence of stator yoke thickness on vibration reduction compared to the other stator shape parameters. Moreover, a less noisy structure is proposed, based on the simultaneous analysis of electromagnetic performances and elastic characteristics.