Three-Pole Magnetic Bearing Design and Actuation
Three-Pole Magnetic Bearing Design and Actuation
复制标题
三极磁力轴承设计与驱动
DOI：
10.1109/tia.2020.3013723
复制
发表时间：
2020
影响因子：
4.4
通讯作者：
E. Severson
中科院分区：
文献类型：
--
作者：
Nicholas R. Hemenway;E. Severson
由于其结构简单，仅依赖于三个线圈，并且能够由三相功率转换器操作，因此三极磁轴承最近在磁悬浮研究界引起了兴趣。然而，三极轴承的控制要复杂得多。基于线性化电流模型的控制策略导致<inline-formula><tex-math notation="LaTeX">x$</tex-math></inline-formula>和<inline-formula><tex-math notation="LaTeX">y$</tex-math></inline-formula>径向力之间的寄生耦合，产生显著的力矢量误差。研究计划已经开发出具有不同功能和操作原理的独特三极几何形状。本文回顾了各种研究举措的三极轴承，开发了一个通用的框架，考虑任何三极轴承配置的力量，演习这个框架，以提供深入了解基本的设计拓扑结构的选择，并提出了一种方法来计算精确的控制电流和最佳偏置场。这篇文章表明，使用精确的控制电流计算与建议的最佳偏置场产生的力密度提高高达15.5%，而需要23.4%的安培匝数减少相比，使用传统的偏置水平。提供了力计算框架的实验验证。
The three-pole magnetic bearing has recently gained interest within the magnetic suspension research community due to its simple structure that relies on only three coils and ability to be operated by three-phase power converters. However, the three-pole bearing is substantially more complicated to control. Control strategies based on linearized current models result in parasitic coupling between <inline-formula><tex-math notation="LaTeX">$x$</tex-math></inline-formula> and <inline-formula><tex-math notation="LaTeX">$y$</tex-math></inline-formula> radial forces, yielding significant force vector errors. Research initiatives have developed distinct three-pole geometries with varying capabilities and operating principles. This article reviews the various research initiatives on the three-pole bearing, develops a generalized framework for considering the forces of any three-pole bearing configuration, exercises this framework to provide insights into fundamental design topology choices, and proposes a method to calculate exact control currents and an optimal bias field. This article shows that using the exact control current calculations with the proposed optimal bias field yields a force density improvement of up to 15.5% while requiring 23.4% fewer ampere turns as compared to using conventional bias levels. Experimental validation of the force calculation framework is provided.
三极组合径向和轴向主动磁轴承的线性和非线性控制 - 比较
影响因子：
4.4
作者：
E. Fleischer;W. Hofmann
通讯作者：
W. Hofmann