Septi-segment switched reluctance machine: design, modeling, and manufacturing

This research introduces a novel magnetically isolated phase structure for switched reluctance motor, namely, as Septi-Segment SRM (SSSRM), which is proper for high torque/volume and with lowest leakage flux in different fields of industries. The SSSRM contains seven stator layers that are isolated from each other magnetically, also each of them include an assembly of 4/4 stator/rotor poles. The three layers are energized at the same time for generating higher torque with lower ripple compared with the typical SRM. Furthermore, this configuration results other advantages, such as easy cooling and independent phases. To evaluate the proposed motor performance, the configuration is introduced at first. Secondly, the motor profiles as flux linkage, flux density, self/mutual inductance and motor torque are assessed using a 3D finite element method (3D-FEM). An SSSRM has been manufactured with a test bench in the laboratory, and the experimental results of the new motor and typical type were compared in the same volume and area. The results and comparative study clearly demonstrate the prominent features of the proposed motor for various applications. Copyright (C) 2015 John Wiley & Sons, Ltd.