A Comprehensive Review of Control Techniques for Torque Ripple Reduction in Switched Reluctance Motor Drives for Evs

Electric Vehicles continue to advance, optimizing the performance and efficiency of their propulsion systems remains a critical focus. Switched Reluctance Motors have emerged as a promising candidate for EV applications due to their simple construction, magnet-free operation, robustness, and cost-effectiveness. However, SRMs face inherent challenges, particularly torque ripple and audible noise, which arise from their nonlinear characteristics and adversely affect overall performance and efficiency. Addressing torque ripple reduction is essential to improving SRM drive systems and making them more competitive with other motor technologies. This paper presents a comprehensive review of torque ripple minimization techniques in SRM-driven EV applications, categorizing and evaluating various mitigation strategies with a strong emphasis on control-oriented approaches. The review explores different torque control methods, assessing their effectiveness in suppressing torque ripple while analyzing fundamental SRM operations and excitation angle techniques. Furthermore, a comparative analysis of torque control strategies is conducted, highlighting their key features, torque ripple performance, and associated limitations.