| Title |
Commutation Time Control for Torque Ripple Reduction of BLDC Motors |
| Authors |
오태석(Oh Tae-Seok) ; 허남억(Her Nam-Euk) ; 김일환(Kim Il-Hwan) |
| Keywords |
BLDC ; Torque Ripple Reduction ; Commutation Time ; Unipolar PWM |
| Abstract |
This paper presents a new method on reducing commutation torque ripples generated in brushless dc motor drives. In such drives the current ripples are generated by motor inductance in stator windings and the back EMF. The ripples suppression techniques that are practically effective in high speed as well as in low speed regions are rarely found. The proposed method here is based on a strategy that the commutation intervals of the incoming ang the outgoing phases can be equalized by a proper PWM control. The controller is implemented by a 16-bit microprocessor and effectiveness of the proposed control method is verified through experiments. |