AN IMPROVED SCHEME OF INDUCTION MOTOR DIRECT TORQUE CONTROL SYSTEM

Due to the large torque ripple and current ripple of asynchronous motors based on direct torque control at operation status,this paper proposed a new control strategy.On the basis of two-level inverter,a Boost circuit was added to decrease the torque ripple and inverter frequency. The simulation shows that it can efficiently solve the problem of torque ripple and current ripple.