Sensitivity Analysis of Rotor Geometry for External-Rotor Synchronous Reluctance Motor Using Finite Element Method

Rotor structure Design complexity in synchronous reluctance machines has been one of the major challenges in decades. In this paper, an analysis of sensitivity for the rotor geometry parameters of a 6-pole external-rotor synchronous reluctance motor has been carried out. The d axis & q axis inductances have significant importance on simultaneously achieve maximum developed torque & low torque ripple. Many magnetically accurate Finite element analyses have been conducted to characterise the electromagnetic motor performance. The analyses confirm the validity of the torque & power factor expressions for the proposed external rotor synchronous reluctance motor.