Abstract
Segmental rotor Switched Reluctance Machines (SRMs) have been demonstrated to produce more torque than toothed rotor SRMs because each coil is able to link more magnetic flux. This paper considers a six-phase segmental rotor SRM and compares it to a conventional SRM with the same lamination length and outer dimensions. Both fully-pitched (FP) and single-tooth wound (STW) motor configurations of the segmental rotor SRM are investigated. The FP winding machine produces higher torque than the single tooth winding machine when using the same phase conduction angles but has unacceptably long end windings. Optimized conduction widths and current shapes are subsequently applied to the single tooth winding segmental rotor SRM. The segmental SRM is shown to produce about 10% higher rated torque, with less core loss and copper loss than the conventional SRM throughout the whole speed range.
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