A Review of Current Control Strategies for Switched Reluctance Motor Drives: Performance Evaluation Across a Wide Speed Range

Switched reluctance motors (SRMs) have attracted increasing interest because of their robustness, cost effectiveness, and suitability for high-speed applications. Accurate current control plays a critical role in achieving high performance, and a wide speed operation range is often required in electrified drivetrains. While numerous current control methods have been proposed in the literature, their applicability across different speed regions has not been systematically clarified. This article presents a comprehensive review and classification of current control strategies for SRMs, organized according to their applicable speed regions. The speed-dependent characteristics and corresponding control challenges are first discussed to establish the basis for classification. Existing methods are then categorized into two major groups: those applicable to low and intermediate speeds and those tailored for high-speed operation. Each category is analyzed in terms of dynamic performance, robustness, and computational complexity. Representative current control methods are evaluated through both simulation and experimental validation to assess their performance across varying speed conditions. Finally, existing challenges and future research trends are discussed.