A study on the torque pulsation caused by commutation time in BLDC Motor

BLDC모터에서 전류시간에 의한 토크맥동에 관한 연구

Torque pulsation generated in every commutation period is the main drawback of BLDC motor which deteriorates the precision of BLDC motor. Many methods to solve this problem have been proposed. In this paper a new torque model considered with decaying phase back EMF is introduced and from it the cause of torque pulsation in commutation period is analyzed. Form this analysis new algorithms to reduce the torque pulsation by commutation time are proposed and with simulation the validity is verified.