Advanced Sliding Mode Control Based PMSM Drive Systems for Industrial Applications

Date: 28/05/2026

Time: 9:00 am

Presenter: Abdul Khalique Junejo

Abstract: Permanent magnet synchronous motors (PMSMs) are essential to high-performance applications such as electric vehicles, CNC machines, robotics, and aerospace due to their high efficiency, power density, and fast dynamics. However, the PMSM drive system is a strongly coupled, multivariable, nonlinear system highly susceptible to parameter perturbations and external disturbances. While conventional proportional-integral (PI) controllers are simple and widely used, they suffer from speed fluctuations and degraded performance under real-world disturbances. Sliding mode control (SMC) offers a robust nonlinear alternative, being inherently insensitive to uncertainties and disturbances. Yet, traditional SMC is plagued by the chattering phenomenon, which limits its practical adoption. This webinar presents cutting-edge solutions to overcome these challenges. We introduce a continuous fast terminal sliding mode control (CFTSMC) that significantly reduces chattering while improving transient response, steady-state accuracy, and disturbance rejection. To further enhance robustness, composite control strategies integrating CFTSMC with extended state observers (ESO) and extended sliding mode disturbance observers (ESMDO) are developed. Additionally, novel adaptive and fast terminal sliding mode reaching laws—ATSMRL and FTSMRL—are proposed to accelerate reaching velocity, eliminate chattering, and strengthen load disturbance capability. Comprehensive simulation and experimental results from a 3 kW PMSM testing platform demonstrate that the proposed CFTSMC with ESO outperforms conventional PI and classical SMC. The ATSMRL and FTSMRL further show superior convergence, tracking accuracy, and disturbance rejection. This webinar delivers practical, robust, and chattering-free control solutions for next-generation PMSM drive systems.

Dr. Abdul Khalique Junejo (SMIEEE’23) received his Ph.D. degree from the School of Electrical and Electronics Engineering at the State Key Laboratory of Advanced Electromagnetic Engineering, Huazhong University of Science and Technology, Wuhan, China. He is currently working as a Postdoctoral Fellow Interdisciplinary Research Center for Sustainable Energy Systems (IRC-SES), KFUPM, Dhahran, Saudi Arabia. Additionally, he is employed as an Assistant Professor at Quaid-e-Awam University of Engineering, Science, and Technology (QUEST), Nawabshah, Sindh, Pakistan. He has served as an Associate Editor for CES Transactions on Electrical Machines and Systems and Academic Editor of Scientific Reports, a Springer-Nature journal. He has organized special sessions in well-recognized conferences, such as IECON 2023-2026, SEGRE 2024, and CPE-POWERENG 2025. He has published more than 40 SCI journal papers, including 25 IEEE papers (IEEE TVT, IEEE TPEL, IEEE TIE, IEEE TEC, IEEE IAS, IEEE TTE, and IEEE Access) and 17 national and international journals. Furthermore, he has attended and published papers at international conferences on machines, including ICEMS, LDIA, CIYCEE and ECCE. He has served as a reviewer for various IEEE Transactions journals. One of his papers was selected as one of the best papers published during 2019-2020 in the IEEE Transactions on Energy Conversion in the Power Generation Systems and Grid Interfaces area. Moreover, one of his papers has been recognized as a highly cited paper in WoS 2024-2026, ranking in the top 1%, and another paper ranks in the top 2%. His research interests include sliding mode control, direct torque control (DTC), model predictive control (MPC), and sensorless control methods for permanent magnet synchronous machines (PMSM), induction machines (IM), linear IM, linear oscillatory motors, and drives, as well as renewable energies.