Switched Reluctance Motor with Permanent-Magnet Embedded Rotor Ring for Torque Enhancement in High Speed Applications

High speed motors are gaining more popularity thanks to their having various applications. Switched Reluctance Motors (SRMs) can be considered suitable candidates for high speed applications because of their simplicity and reliability. However, relatively low values of the produced torque due to design requirements are sometimes considered among their problems. In this paper, a novel, high-torque, and high-efficiency topology for high speed SRMs is proposed which uses a Permanent Magnet (PM) Ring in the Rotor of SRM and is labeled by PMRRSRM. After a brief explanation of design, finite element methods (FEM) are conducted to identify the most proper geometry compared to other configurations in PMRRSRM, as well as to calculate multiple key features like torque profile, current profile, flux density, efficiency, etc. Then, to verify performance in vast operation points, results are extracted per different excitations and speeds. The presented motor seems to be a good candidate for high speed applications which benefit from the inherent characteristics of the SRMs and also the use of PM for torque increment.