Research for BLDCM torque ripple suppression based on position sensorless
ZHENG Xiao-wan
YANG Sheng-hao
CAO Ling-zhi
Abstract：Brushless DC motor(BLDCM)has the problem of torque ripple due to its structural characteris-tics and traditional modulation mode,which limits its application range and especially in high precision ser-vo system. A control method that combines the PWM-ON-PWM modulation mode with BUCK converter ba-sis on position sensorless was proposed,to eliminate or suppress the torque ripple. Simulink results showed that the method can not noly completely eliminate the freewheel current of silent phase to eliminate the non-commutation torque ripple,but also decrease the commutation torque ripple in the running process of the motor.
Keywords：brushless DC motor(BLDCM)torque ripple suppressionposition sensorlessPWM-ON-PWM modulationBUCK converter
Publication Date：2015-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 77-82 )