Finite-Element Analysis of Brushless DC Motor Considering Freewheeling Diodes and DC Link Voltage Ripple.

This paper deals with the characteristic analysis of a brushless dc motor (BLDC) taking into consideration the free-wheeling diodes and dc link voltage ripple using a time-stepped voltage source finite-element method. By comparing the experimental results, the authors show that the proposed computational method is useful for the analysis and design of a BLDC motor. They 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. [ABSTRACT FROM AUTHOR]