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All Journal IAES International Journal of Artificial Intelligence (IJ-AI)
Utrilla Mego, Limberg Walter
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Computer Science & IT Engineering

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Low-speed scalar control of induction motor by fuzzy logic Sevilla-Hidalgo, Alfonso Alejandro; Uscamaita-Quispetupa, Rossy; Herrera-Levano, Julio Cesar; Utrilla Mego, Limberg Walter; Coaquira-Castillo, Roger Jesus
IAES International Journal of Artificial Intelligence (IJ-AI) Vol 14, No 6: December 2025
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijai.v14.i6.pp4623-4635

Abstract

Efforts have continually been directed toward optimizing processes in various fields, and the application in induction motors is no exception. Scalar control V/f offers a straightforward method to regulate the speed of a three-phase induction motor (TIM). However, it faces challenges at low speeds or proportionally at low frequencies, often failing to operate below 20% of its rated speed. This control typically pairs with a PI controller (PIC) for closed loop speed regulation, but its limited control range hinders performance at low speeds. Although intelligent methods have been developed to improve scalar V/f control, attention is often focused on high speeds, while control at low speeds is overlooked. This paper presents the simulation of a fuzzy controller (FC) with a Mamdani-type structure designed to achieve effective low-speed control of a TIM using the V/f scalar control technique. The results not only show improvements in overshoot and settling time but also reveal that the FC can control speeds as low as 6.06% of the rated speed, and it ensures a starting current below the designed motor current under load. Comparative analysis indicates that the FC outperforms the PIC in low-speed control, and it provides an optimal inrush current across different low speeds.
Co-Authors Coaquira-Castillo, Roger Jesus Herrera-Levano, Julio Cesar Sevilla-Hidalgo, Alfonso Alejandro Uscamaita-Quispetupa, Rossy