Influence of Laminating Materials and Modified Pole Shapes on the Performance of Segmented Rotor Switched Reluctance Motor

This work deals with the torque ripple minimization techniques of Segmented Rotor Switched Reluctance Motor (SSRM) for cooling fan application. Torque ripple, acoustic noise and vibration are factors resisting the segmented rotor SRM. To overcome this, stator and rotor pole modifications along with the effects of laminating steel material have been analyzed for the performance improvement of the machine. The performance of the machine with different laminating steel materials such as M19, M850-65A, M890-50d and M43 are compared with the conventional CR-10 steel material. With respect to pole shape modifications the analysis has been performed by considering stator pole taper, stator pole arc, rotor segement structure and rotor pole depth. The results highlight the influence of structural modifications and material properties on the performance of the motor. The results of electromagnetic analysis disclose that the segmented rotor configuration with M890-50d material exhibits superior electromagnetic characteristics.