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Partitioned Stator- Flux Switching Machine Utilizing Different Magnet Grades

A partitioned stator flux switching machine addresses one of the key challenges in conventional flux switching machine (FSM) in terms of having the winding and permanent magnets (PMs) competing for space. On the other hand, it has the challenge of high volume of PM material. Therefore, this paper aims to propose a partitioned stator flux switching machine for traction application using a blend of magnet types (can be thought of as hybrid magnets), i. e. Dy-NdFeB, Dy-free NdFeB, and Ferrite to reduce the overall permanent magnet cost while maintaining comparable electromagnetic performance. The paper will present electromagnetic performance evaluation of multiple designs using Two-Dimensional Finite Element Analysis. Comparison of key performance metrics including torque/power-speed curves, short-circuit current, flux weakening capability, risk of demagnetization, and cost analysis will be presented.