DTC-SVM Control of Induction Motor Based on Dragonfly Optimization Algorithm

Abstract

In this work a performance investigation of the modified Direct Torque Control based on Space Vector Modulation (DTC-SVM) control algorithm has been performed. The investigation process was accomplished by comparing the performance of this algorithm by two methods for tuning the parameters of its controllers. In the first method, the parameters of the Proportional Integral (PI) controllers were tuned by trial and error. The second method was to utilizes the Dragonfly optimization method (DF) for tuning these parameters. The DTC-SVM supplies a desired switching pulses to the 3-phase 3-level Flying Capacitor Inverter (TLFCI). The concerned inverter drives a 3-phase induction motor to achieve the desired speed and to reduce the ripples of the flux and torque. The DTC-SVM control and the DF algorithms are implemented using MATLAB/Simulink program. The simulation process is carried out for verifying the performance of these two control systems. With the DTC-SVM based on DF, the optimization process is accomplished firstly to extract the PIs parameters. These extracted parameters were employed in the DTC-SVM control system. Simulation results show an acceptable performance for the control systems with the DTC-SVM based on DF being the best in reducing torque ripples.