Effect of magnetic pole arrangement on core loss in laminated high-speed magnetic journal bearings
Effect of magnetic pole arrangement on core loss in laminated high-speed magnetic journal bearings
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DOI：
10.1109/20.508388
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发表时间：
1996-07
影响因子：
2.1
通讯作者：
L. S. Stephens;C. Knospe
中科院分区：
文献类型：
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作者：
L. S. Stephens;C. Knospe
与滚动元件或流体膜轴承相比，磁性轴颈轴承的功率损失非常低，通常可以忽略不计。然而，随着运行条件变得更加苛刻，必须考虑磁轴承中的功率损耗。本文研究了磁极布置方式对高速高磁通密度运行的磁轴承铁心损耗的影响。实验铁损结果的转速高达310万DN和磁通密度高达1.60 T。这些结果是针对由钴铁构成的磁轴承。结果进行了比较，现有的结果为低速运行的硅铁磁轴颈轴承。结果表明，一对极的安排给出了一个略低于交替极安排的铁损，这一优势是不一定可以忽略不计的钴铁轴承在高速和高磁通密度。
Power losses in magnetic journal bearings as compared to rolling element or fluid film bearings are very low and normally negligible. However, as operating conditions become more severe, the power losses in magnetic bearings must be considered. This paper examines the effect of magnetic pole arrangement on the core loss of a magnetic journal bearing at high-speed and high-flux-density operation. Experimental core loss results are presented for rotational speeds up to 3.1 million DN and flux densities up to 1.60 T. These results are for a magnetic bearing constructed of cobalt iron. The results are compared to existing results for low-speed operation of silicon iron magnetic journal bearings. Results show that a paired pole arrangement gives a slightly less core loss than an alternating pole arrangement, and that this advantage is not necessarily negligible at high speeds and high flux densities for the cobalt iron bearing.