A torque controlled induction motor drive system

This paper presents a field oriented induction motor drive system which can function as a controllable source of torque with fast dynamic response and thus can achieve an adequate control performance. The proposed drive system includes an accurate and robust flux and torque estimator. The newly designed flux and torque estimators keep the machine field oriented and can overcome problems of any alteration in the transformation and torque ripples. Simulation and experimental results are presented to show the effectiveness of the proposed drive system.