Characteristics Analysis of a Novel 12/14 Conical Bearingless Switched Reluctance Motor

In order to realize the active control of five- Degrees of Freedom (5-DOF) of the rotation part, a novel conical bearingless switched reluctance motor (BLSRM) is proposed in this paper. Unlike conventional BLSRMs, the proposed structure is composed of two conical 12/14 BLSRMs, and each conical type adopts hybrid stator poles with short flux paths. Therefore, the proposed structure has naturally decoupled characteristics between the torque and suspending force, which may reduce the control difficulty of the BLSRM. In addition, the proposed structure could control the radial and axial positions of the rotor simultaneously due to the conical structure, thereby completely realizing the selfsuspension of the rotor. To verify the proposed structure, finite element method (FEM) is employed to get the characteristics of the proposed structure. Finally, the validity of the proposed structure is verified by the analysis results