브러시리스 직류 전동기의 토크 맥동 저감을 위한 전류 제어 방식에 관한 연구

A Study on the Current Control Method for Torque Ripple Reduction of Brushless DC Motor

The brushless DC motor with trapezoidal back emfs has torque ripple due to phase commutation. The torque ripple generates noise and vibration and cause errors in position control so this makes the brushless DC motor less suitable for high performance servo applications. In this paper, we propose a new current control method to reduce the torque ripple due to commutation, when the unipolar PWM method is applied for the phase current control of brushless DC motor.