Active magnetic bearings (AMBs) bring extraordinary benefits such as free of contact, elimination of lubrication, active control of rotor position, and a built-in monitoring system. In the design of AMBs, the bearing structure is of significance since it has an important impact on bearing performances. However, the effect of winding configurations of AMBs is still obscure. In this paper, the system-level implications of two radial AMB winding configurations termed the Ortho and the Cross types are investigated, including the bearing characteristics, power consumptions and rotor dynamic behaviors. The simulation results demonstrate that the Cross type contributes to larger load capacity in the direction of gravity. In condition of a heavier gravity load (−200 N), the Cross-type winding configuration saves power consumption with a percentage of 17.2% at steady state (20,000 rpm) and 12.7% considering unbalance mass during the run-up process. However, the rotor vibrations of the Cross type in case of external loads and unbalance mass are larger than the Ortho type. The proposed results of this paper provide some useful information for the AMB winding configuration design.

中文翻译：

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AMB绕组配置对AMB转子系统的静态和动态性能以及功耗的影响

主动式电磁轴承（AMB）具有非凡的优势，例如无接触，无需润滑，主动控制转子位置以及内置监控系统。在AMB的设计中，轴承结构具有重要意义，因为它对轴承性能具有重要影响。然而，AMB的绕组配置的影响仍然不清楚。在本文中，研究了两个径向AMB绕组配置（称为Ortho和Cross型）的系统级含义，包括轴承特性，功耗和转子动态行为。仿真结果表明，Cross型在重力方向上有助于更大的负载能力。在重负载（−200 N）较大的情况下，交叉型绕组配置可节省功耗，为17％。在稳态（20,000 rpm）下为2％，考虑到启动过程中的不平衡质量，则为12.7％。但是，在外部负载和不平衡质量的情况下，Cross型转子的振动大于Ortho型。本文提出的结果为AMB绕组配置设计提供了一些有用的信息。