Research on flux and torque ripple minimization in DTC of inductance motor based on optimized control

Abstract

Direct torque control (DTC) schemes can produce quick and robust responses, but heir major problem is the high torque and flux ripple, especially when operation conditions result in low speed. This paper proposes a new control strategy. On the basis of conventional direct torque control, a flux and torque ripple minimum controller is introduced in the strategy in order to decrease flux and torque ripple. Simulation results justify the validity of the proposed method to reduce the motor torque and flux ripple