PUBLICATIONS

This paper presents a method to reduce commutation torque ripples occurred during commutation in brushless dc motor drives using

a single DC-link current sensor. In brushless dc motor drives with a single dc current sensor instead of 3-phase line current sensors, it

is noted that dc-link current sensor cannot give any information corresponding to the motor currents during line current commutation

intervals. A new technique to resolve such a problem is dealt with based on a deadbeat current control in which motor armature

voltage command is computed from a dc-link current reference, an actual current and counter emf voltage. The simulation results show

that the proposed method reduces the torque ripple significantly.