A novel scheme of direct torque control in the permanent magnet synchronous motor drive

This paper proposes a novel direct torque control method (DTC) realizing i
_d
=0 control at whole load range, which means greatly improving the efficiency and the operation reliability at light load mode. The experimental and simulated results indicate that the presented control system can achieve the desired performances in Permanent Magnet Synchronous Motor (PMSM) system.