Title: Shaping the stator teeth of an isolated stator sections switched reluctance motor to deliver high output torque

Authors: Eyhab El-Kharashi, Pia Salminen

Addresses: Electrical Power and Machines Department, Faculty of Engineering, Ain Shams University, 1 El-Sarayat Street, Abdou Basha Square, Abbassia, 11517 Cairo, Egypt. ' Department of Electrical Engineering, Lappeenranta University of Technology, P.O. Box 20, FIN-53851, Lappeenranta, Finland

Abstract: In the isolated stator sections 6/8 SRMs, wide stator teeth produce high flux, yet not all of this flux generates output torque. For proper design of the 6/8 SRM, the rotor teeth widths are less than the stator teeth widths, which means that not all the flux in the stator transfers to the rotor. In this study, the stator teeth are tapered to optimise the stator flux transfer from the stator to the rotor in order to increase the output torque. A comparison between the torque of the SRM with and without tapered stator teeth is presented.

Keywords: finite element method; FEM; Simulink; switched reluctance motors; SRM design; tapered teeth; stator teeth; rotor teeth; stator flux transfer; output torque.

DOI: 10.1504/IJPEC.2009.023479

International Journal of Power and Energy Conversion, 2009 Vol.1 No.1, pp.73 - 89

Received: 17 Jun 2008
Accepted: 10 Nov 2008
Published online: 24 Feb 2009 *

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