Characteristic analysis of a novel segmental rotor axial field switched reluctance motor with single teeth winding

Abstract

Switched reluctance machines with segmental rotors are investigated, base on the traditional radial field magnetic structure, a novel axial field SRM is prototyped. This paper presents a machine topology, which permits the use of short pitched windings placed around a single teeth stator, and with the segmental rotor design, the core loss and weight of the rotor will be reduced. This concept maintains the torque capability of a previous design, but uses much less copper volume. The finite element model is established base on the software of Maxwell 12- 3D, which is aimed at flux linkage, inductance, output torque, radial force and axial force. The theoretical basis for the machine configuration is developed and then the results for a working prototype machine are shown, illustrating static torque and flux linkage profiles. Results are presented for the machine operating as a drive, indicating the viability of the concept which is much suitable for the low speed and high torque application.