Novel switched reluctance propulsion motor drives for electric and hybrid electric powertrains

交通运输的模式正在向更环保的电动和混合动力汽车转变。事实上，动力系统的电气化会带来更高效、更高性能、更清洁、更安全的车辆。然而，电动、混合动力和插电式混合动力汽车（ev、hev和phev）大规模商业化面临的主要技术挑战包括开发低成本、可靠、坚固、容错和可扩展的电力推进电机驱动器。提出的研究计划的重点是一个新的家族开关磁阻电机（SRM）驱动器，以克服这些主要挑战。

There is an evolving paradigm shift in transportation toward more environmentally friendly vehicles with electric and hybrid powertrains. In fact, powertrain electrification results in more efficient, higher performance, cleaner, and safer vehicles. However, major technical challenges for the mass commercialization of electric, hybrid, and plug-in hybrid electric vehicles (EVs, HEVs, and PHEVs) include the development of electric propulsion motor drives that are low cost, reliable, rugged, fault tolerant, and scalable. The proposed research program is focused on a novel family of switched reluctance motor (SRM) drives to overcome these major challenges. The proposed research objectives are aimed at developing SRM drives with excellent traction performance and lower cost compared to the currently used permanent magnet brushless and induction motors. The absence of windings or permanent magnets on the rotor and simple machine construction make SRMs lower cost and their high peak torque-to-inertia ratio and wide speed range make them well suited for propulsion applications. However, high torque ripple, acoustic noise, and vibration have prevented the widespread use of SRMs. Furthermore, conventional SRMs have lower power density compared to the permanent magnet brushless machines. Therefore, there is a desire to reduce torque ripple and acoustic noise and improve torque production of SRMs. The proposed new SRMs have a higher number of rotor poles than stator poles. Such novel stator and rotor pole combinations provide SRM designs with higher torque, lower torque ripple, and better performance while also being inherently less expensive for high volume production. The proposed SRM technology has several advantages compared to the conventional known SRMs. These benefits include higher power density, lower torque ripple, higher efficiency with lower copper loss, and improved thermal performance. It is expected that these significant improvements will lead to the development of advanced low cost, reliable, and fault tolerant SRMs for propulsion applications of EVs, HEVs, and PHEVs.