Direct Torque Control System Synthesis for Induction Motor with Torque Feedback.

This paper presents anew approach of direct torque control method for an induction motor.In order to control torque directly, state equations based on energy stored in the rotating field are derived.we clarify the electromechanical energy conversion between magnetic energy converted to torque and that stored in the field.The direct torque control system with torque as the output variable applied on optimal control theory are proposed.Quick torque responses for the desired torque are obtained from simulation results.