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
Highlights
INDUCTION motors are the most popular electrical systems in modern industries and are known for their many benefits which are high efficiency, low costs, low maintenance needs, and simple construction[1]-[3]
It is obvious that the controller performance with induction motor in case of using Fractional-order Proportional Integral Derivative (PID) controller (FOPID) with Nelder –Mead optimizer introduced better performances indices such as minimum rising time is equal (0.061sec) and reduced the settling period ( 0.1sec) so the motor performance in this case is more efficient than using PID
This paper presented a details study about constant speed control achievement of the induction motors due to their highly important needed in the industrial applications
Summary
INDUCTION motors are the most popular electrical systems in modern industries and are known for their many benefits which are high efficiency, low costs, low maintenance needs, and simple construction[1]-[3]. The induction motor (IM) is a kind of AC motors where the electromagnetic power is passed from the main windings to secondary windings through inductive coupling, the two windings being isolated by an air gap. This power is normally transferred from the stator windings to the rotor windings in a three-phase motor to convert electrical power to mechanical power [4], [5].
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