Simulation of Intelligent Direct Torque Control System for Induction Motor

Normal direct torque control have the problem of big electricity and torque ripple in low speed, a new control method was presented in this paper in order to solve this problem. We use discrete duty ratio control technology in high region while intelligent direct torque control is used for the low speed region control. Simulation and experiment result show that new method is more effective than traditional DTC, the electricity and torque ripples is reduced, system control performance is obviously improved.