Design and Analysis on the Novel Uncoupled Six-pole Three-Degree-of-Freedom Hybrid Magnetic Bearing

To eliminate the control flux coupling and improve the suspension performance of the three degrees of freedom (3-DOF) hybrid magnetic bearing (HMB), a novel three degrees of freedom hybrid magnetic bearing with independent radial magnetic circuit is proposed. In the novel three degrees of freedom hybrid magnetic bearing, the stator is composed of three cores with two poles. Firstly, the configuration and suspension principle are introduced. Secondly, the equivalent bias and control magnetic circuits are established. The force-current relationships are derived. According to the given radial and axial bearing capacity, the main parameters of the prototype are designed. Finally, the three-dimensional finite element method is used to verify the correctness of the structure, suspension mechanism and mathematical models.