Modular Stator, Segmented Rotor Switched Reluctance Motor Prototype: Assembly and Characterization

This work investigates the assembly and the effect of the air gap distance to the torque and inductance vs rotor position curves of a modular stator, segmented rotor, switched reluctance motor (MSSR-SRM). Response surface methodology (RSM) was used to determine the significance to the average torque output given various MSSR-SRM dimensions and air gap distances. A comparison of the simulated torque output and actual measurements from the prototype suggest that the air gap of the physical machine deviates from the ideal design value of 0.3mm. Simulations however agree well with the observed quantities when the distance is modified, indicating an actual air gap width that varies between 0.50-0.60mm. Direct air gap measurements also support this result. It was shown that air gap distance has a major effect on MSSR-SRM output behavior. The experiences with the assembly, characterization, and RSM provide insight on further MSSR-SRMs design processes.