1.School of Electrical and Information Engineering Jiangsu University Zhenjiang 212013 China;
2.School of Electric Power Engineering Nanjing Institute of Technology Nanjing 211167 China
A hybrid double stator bearingless switched reluctance motor (HDSBSRM) is proposed in this paper to solve the coupling problem of traditional bearingless switched reluctance motor (BSRM). The suspension output capability is improved and the suspension power loss is reduced. The motor consists of an inner stator and an outer stator, i.e., double stator structure. The outer stator and the inner stator share a rotor. The inner stator provides a bias magnetic field for generating active controllable suspension force by with an axial magnetized permanent magnet ring. By introducing the topological structure and working principle, the mathematical model of the radial suspension force is deduced, and the basic electromagnetic characteristics and decoupling characteristics are analyzed. The self-decoupling characteristics between the torque system and the suspension system is verified. Furthermore, compared with the traditional double stator bearingless switched reluctance motor, the proposed HDSBSRM has the advantages of high suspension output and low suspension power loss.
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2019, Vol. 34 
