The hybrid magnetic bearing (HMB) with six poles possesses the characteristic of symmetrical structure. Thus, direct current and alternating current control can be selected to generate two degrees of freedom levitation forces. In this paper, Firstly, the winding connection modes and the generation mechanisms of levitation force under two control methods are analyzed, and the corresponding equivalent magnetic circuits are given. The force-current relationships and the bearing capacities of the two control methods are deduced. On the premise of the same parameters, we construct two comparison models. The magnetic field distributions, levitation forces and coupling characteristics of the two control methods are compared.

中文翻译：

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六极混合磁力轴承两种控制方式的比较


六极混合磁力轴承（HMB）具有对称结构的特点。因此，可以选择直流和交流控制来产生两个自由度的悬浮力。本文首先分析了两种控制方式下的绕组连接方式和悬浮力的产生机理，并给出了相应的等效磁路。推导了两种控制方法的力-流关系和承载能力。在参数相同的前提下，我们构建了两个比较模型。比较了两种控制方法的磁场分布、悬浮力和耦合特性。