Enhanced voltage regulation of buck converter-fed DC motors using fuzzy logic control under dynamic load conditions

Mohamed, Mawada Ahmed and Toha @ Tohara, Siti Fauziah and Abdullah, Muhammad and Ahmad, Salmiah and Md Nor, Khairul Affendy and Haji Hassan, Masjuki and Idris, Ahmad Syahrin (2025) Enhanced voltage regulation of buck converter-fed DC motors using fuzzy logic control under dynamic load conditions. International Journal of Robotics and Control Systems, 5 (2). pp. 1422-1440. ISSN 2775-2658 E-ISSN 2289-7860

	PDF - Published Version Restricted to Registered users only Download (1MB) | Request a copy
Preview	PDF - Supplemental Material Download (149kB) | Preview

Abstract

Buck converters are widely employed in power electronics for efficient DC voltage regulation, particularly in applications such as motor drives and embedded systems. However, conventional control methods, such as PID, often exhibit limitations including significant voltage ripple, overshoot, and sluggish dynamic response under varying load conditions. This study introduces a fuzzy logic controller (FLC) integrated into a buck converter system to address these challenges through adaptive and nonlinear control. The research contribution is the design and simulation of an FLC-based voltage regulation strategy that enhances output stability and improves transient performance in DC motor applications. The proposed buck converter operates in continuous conduction mode and consists of an IGBT switch, inductor, diode, and filter capacitor. The FLC employs voltage deviation and its rate of change as input variables and utilizes a 25-rule Mamdani fuzzy inference system to modulate the duty cycle in real time. Simulated in MATLAB Simulink with a dynamic DC motor load, the FLC demonstrates superior control characteristics over the PID controller. Most notably, voltage ripple is reduced by over 65%, leading to improved voltage stability and reduced fluctuations. The FLC also exhibits faster settling behavior and better handling of dynamic load variations, confirming its effectiveness in nonlinear and time-varying systems. Future work will focus on hardware validation, hybrid control integration, and deployment in renewable energy and electric vehicle systems to improve adaptability and real-world performance.

Item Type:	Article (Journal)
Uncontrolled Keywords:	Adaptive Voltage Regulation; Buck Converter Control; DC Motor Drive Systems; Fuzzy Logic Controller (FLC); MATLAB Simulink Simulation
Subjects:	T Technology > TL Motor vehicles. Aeronautics. Astronautics > TL1 Motor vehicles
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering > Department of Mechatronics Engineering Kulliyyah of Engineering
Depositing User:	Dr. Siti Fauziah Toha
Date Deposited:	19 Aug 2025 15:13
Last Modified:	19 Aug 2025 15:13
URI:	http://irep.iium.edu.my/id/eprint/122711

Actions (login required)

View Item