The Design Of System In Inverter-Synchronous Motor Direct Torque Control And Study Of Simulation

The thesis proposes a novel kind of Direct Torque Control (DTC), which is based on the Traditional control scheme and new technique. According to the fault of complicated calculation-control, characteristics easily affected by the induction motor's parameters and the different result between practical function and theoretical analysis in vector control and the defect of the traditional DTC, I designed a new DTC which uses a three-value regulator to get quickly torque control and adopt the control scheme of invariable magnetic chain to improve the performance of adjusting velocity of the induction motor.To demonstrate the validity of the induction motor's DTC system, some experiments with Simulink of Matlab are given. The results of the computer simulations show that the method is available.