Research of Hysteresis Controller for Direct Torque Control of Induction Motor

In direct torque control of induction motor,the flux and torque hysteresis width greatly influence the stable state performance of the control system.The basic principle of direct torque control was introduced.Then made use of the simulation model of the direct torque control system based on Matlab/Simulink,analysed the influence of the flux and torque hysteresis width to the pulsations of stator current and torque of induction motor.The results of simulation are given,which are helpful for improving the performance of the systems.