REDUCING THE TORQUE RIPPLE OF BRUSHLESS MOTOR BY SHIFTING THE MAGNET BLOCKS

摘要

To reduce the torque ripple of brushless motor is a topic which attracts many researchers in this area for a long time. In this paper, according to the recent research works effectuated in the Institute of Energy Engineering in Belfort of France, the authors present the method of shifting the magnet blocks along the axis of the motor. The principle of this method will be present and some aspects of this method will be discussed. The results show that, by this method, the torque ripple can be reduced within 3% for an initial value of about 40%.