A Survey of Electromagnetic - Thermal Modeling and Design Optimization of Switched Reluctance Machines

Switched reluctance machines (SRMs) are gaining interest in the industry and scientific communities owing to the advantages of rigid structures, high reliability, the absence of permanent magnets, robustness, fast dynamic response, and low manufacturing cost. They have become a feasible alternative to conventional electric machines with variable speed drives in many applications. This paper presents a comprehensive review on the status and potential trends of the technology pertinent to the design of SRMs in the following aspects: the mathematical modeling of the electromagnetic and thermal behaviors of SRMs, the enhancement of the performances in terms of torque ripple, efficiency, torque density and acoustic noise, and the multi-objective design optimization. The existing approaches are systematically and comprehensively summarized and compared for each category.