Flywheel energy storage system (FESS) is a kind of physical energy storage device for electromechanical energy conversion. Bearingless switched reluctance machine (BSRM) fully preserves the excellent characteristics of switched reluctance motor, and improves the high speed performance and operation efficiency by active control of its own radial force. In this paper, a novel BSRM with axial split phase inner stator permanent magnet (PM) structure is proposed to cancel the electromagnetic coupling between torque winding and suspension winding. In order to verify the effectiveness of the proposed BSRM, its electromagnetic field is analyzed by the finite element method (FEM).
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