Self-tuned output scaling factor of fuzzy logic speed control of induction motor drive

Abstract

The rapid advancements in induction motor drives has led to the development of robust non-linear controller such as Fuzzy Logic Controller (FLC). The proportional integral or derivative controllers (PI, PID, and PD) have been in use for induction motor drives for past decades as speed and current controller's. However, these controllers are fixed to motor parameter changes which results in decrease in performance. FLC is robust and non-linear controller which has the ability to withstand with the motor parameters variation. The conventional fuzzy speed controller depends on the speed error and the fixed scaling gains adjusted in most designs. However, this paper proposed a new self-tuned mechanism of the output scaling factor of the fuzzy speed controller which can enhance the performance of the speed and torque of the motor especially during load and parameters variation. Matlab/Simulink environment was utilized to build and design the proposed system and verify the results.