Induction Motor Drive Using Fractional-Order Proportional Integral Derivative (FOPID) Controller Based on Nelder-Mead and Grey Wolf Optimizers.

Document Type : Research Studies

Authors

1 Researcher at Electrical Engineering., Faculty of Engineering., El-Mansoura University., Mansoura., Egypt.

2 professor at Department of Computers and Systems Engineering at Faculty of Engineering, Mansoura University

3 Associate Professor., Electrical Engineering Department, Faculty of Engineering., El-Mansoura University., Mansoura., Egypt.

Abstract

Induction motors are widely used in industrial applications due to their advantages over dc motors in terms of low cost, low maintenance, high performance, and high power density. This article aims to achieve constant speed control of the induction motor (IM) and improves the motor performance using a Fractional-order PID controller (FOPID). The FOPID controller contains five important variables coefficients. They are named as follows: - proportional operator (Kp), integral operator (Ki) derivative operator (Kd), integral of fractional-order (λ) and the derivative of fractional-order μ. The performance of any controller depends mainly on the chosen values of the aforementioned operators (Kp, Ki, Kd, λ, μ) so one of the main objectives of this paper how to optimize the values of these five parameters to improve the system performance. Actually there are many methods to achieve the optimization problem but a two selected optimizers (Grey Wolf Optimizer, and Nelder-Mead) are chosen in this paper due their nature which make them more suitable for the presented problem. Three cases study of the induction motor integrated with the proposed controllers are simulated based on Matlab SIMULINK and the obtained results are discussed in details. The obtained results in all the cases ensured that the proposed FOPID controller introduced always the better performances indices which make it favorably recommended instead of other conventional controllers

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