Decoupling mechanism of torque and levitation-force control for 12/4 dual-winding bearingless switched reluctance motor

摘要

In conventional bearingless switched reluctance motors (BSRMs), the current control algorithm is quite complex due to the coupling between torque and levitation forces. In this paper, a 12/4 dual-winding BSRM is proposed, which can realize decoupling control of torque and levitation forces. Because of the special inductance profile and two windings mounted on the stator pole, the torque and levitation forces can be controlled separately. A finite element method (FEM) is used to verify the validity of the mathematical model and the decoupling characteristics.