performance improvement of coaxial magnetic gear with asymmetric rotor structure

This paper presents an optimal asymmetric permanent magnet (pm) aligning and rotor pole shaping topology in a coaxial magnetic gear (cmg) to mitigate cogging torque and augment torque density. proposed design is based on using asymmetric interior pm placement and applying oval structure on high-speed rotor’s surface. the suggested magnetic gear consists of 12 outer and 3 inner pole pairs. the targeted goals are accomplished by implementing the recommendations, according to the results. finite element analysis results evaluate and verifies the topological performance.