Design and implementation of direct torque control of induction motor drive

Abstract

The direct torque control was proposed as an alternative strategy to the field-oriented control for AC machines drive. This method consists on the direct determination of inverter switching states and offers a simpler and robust scheme and less sensitivity to machine parameters as it depends only on the stator resistance. In this work, the direct torque is presented for induction motor drive fed by two-level voltage source inverter. The control algorithm has been investigated through simulation and experimental tests. The simulation part was carried out using MATLAB/Simulink software, the obtained results shows the effectiveness of this method. Moreover, the generic model of a direct torque control for induction machines is implemented using DSP TMS 320f28027f in order to test and validate the presented control algorithm.