Improved Control Method for Three Phase Induction Motor Based on Optimization DTC Technique

In order to enhance the performance of induction motor (IM), improved direct torque control (DTC) has been presented. The method of DTC is widely utilized for controlling the electric machines. The parameters of conventional proportional integral (PI) speed controller are tuned manually so that to keep speed tracks reference. However, this PI has a drawback which is not compatible with all limit of error. Hence, the intelligent DTC with proposed butterfly optimization algorithm (BOA) is also discussed. Where the BOA is utilizing to tune the parameters of PI speed controller and it is compared with genetic algorithm (GA). The simulation results show the BOA algorithm is very effective for improving the performance of induction motor and fast-tracking with disturbance.

I. Introduction

Variable speed and torque control of electric machines drives have significant methodological and technological advances in the last years. Indeed, the replacement of digital electronics projects and development of power electronics components by implementing the control algorithms which envisaged in the last ten years ago. In various modern industrial applications, the benefits of the induction machine from particular attention mainly because of its reliability, robustness, relatively low cost, simplicity of construction also maintenance [1], [2].