Robust DTC Against Parameter Variation for Three Phase Induction Motor Drive Systems

Direct Torque Control (DTC) strategy has many merits compared to the commonly used control techniques such as Field Oriented Control (FOC). In this paper, the DTC strategy is applied for the three-phase induction motor drive system. The dynamic model for the three-phase induction motor employed is expressed in synchronous reference frame. The proposed control approach is tested under multiple Induction Motor (IM) operating conditions. Furthermore, to evaluate the performance of the developed DTC strategy for IM parameter variation, stator resistance and moment of inertia are tested at different values. The simulation results show that the DTC for three-phase induction motor drive systems gives fast torque response, and good dynamic performance.