Finite Element Analysis of BLDC Motor considering Freewheeling Diodes and DC link Voltage Ripple

환류 다이오드와 DC link 전압리플을 고려한 브러시리스 전동기의 유한요소 해석

This paper deals with the characteristic analysis of a brushless DC motor (BLDC) and taking into consideration the freewheeling diodes and DC link voltage ripple using a time-stepped voltage source finite element method. By comparing with the experimental results, we show that the proposed computational method is useful for the analysis and design of a BLDC motor. We also examine the influence of freewheeling diodes and DC link voltage ripples on the performance of a BLDC motor such as torque ripples and radial force on the surface of the teeth.