A Novel Direct Torque Controlled IM Drives Fed from CSI with Minimum Ripple Torque

This paper proposes a novel vector control strategy for Direct torque controlled current source inverter fed induction motor drives. The choice of the inverter switching vector is based on angular position of stator flux or rotor flux and on the reference and the motor current vectors in the switching vector plane. The performance of this control method has been demonstrated by simulations performed using a versatile simulation package, MATLAB / SIMULINK. The results prove the excellent characteristics for torque response and efficiency, which confirm the validity of this control scheme.