Investigation on Electromagnetic and Vibration Characteristics of Spoke type PMBLDC Motor

Abstract

This paper investigates the effect of slot and pole combination on the electromagnetic and structural characteristics of spoke type BLDC motor. The performance of the motor is evaluated for nine different slot and pole combinations corresponding to feasible slot/pole/phase. First, the electromagnetic field finite element analysis is performed to analyze the effect of slot and pole combination on cogging and average torque. The natural and induced vibration characteristics are obtained by performing structural finite element analysis. In addition, thermal analysis is performed to provide insight into the temperature distribution and thereby providing a complete analysis to establish the effect of slot and pole combination.