Effects of fluctuating magnetic fields on a superconducting bulk rotor shielded with superconducting rings
Effects of fluctuating magnetic fields on a superconducting bulk rotor shielded with superconducting rings
复制标题
脉动磁场对超导环屏蔽的超导整体转子的影响
DOI：
10.1088/1742-6596/507/3/032060
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发表时间：
2014
期刊：
影响因子：
--
通讯作者：
J. Ogawa and O. Tsukamoto
中科院分区：
文献类型：
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作者：
K Yamagishi;J. Ogawa and O. Tsukamoto
为了实现一台实用的超导旋转电机，我们研究了起伏磁场对超导体中俘获磁场的影响，这是超导体中俘获磁场的技术难题之一。先前的研究和其他人的研究表明，波动磁场降低了超导体模块中的俘获磁场强度[1，2]。这阻碍了交流旋转电机应用的发展，因为超导体模块总是暴露在波动的磁场中。因此，有必要开发一种方法来控制捕获磁场的减小。我们提出了一种使用超导导线的屏蔽环来实现这一目标的方法，并通过实验证实了其效果[3]。我们现在正在建造测试设备，用于检查大型旋转机器中屏蔽环的性能。本文报道了作为试验装置一部分的超导转子屏蔽环的试验结果。
We study the effect of a fluctuating magnetic field, which is one of the technical problems for trapped magnetic fields in a bulk superconductor, to realize a practical bulk superconductor rotating machine. Previous research and other's research has shown that fluctuating magnetic fields reduce the strength of trapped magnetic fields in superconducting bulk modules [1, 2]. This deters development of applications of AC rotating machines because superconducting bulk modules are always exposed to a fluctuating magnetic field. Therefore, it is necessary to develop a method to control decrease of the trapped magnetic field. We propose a method to use the shielding ring of a superconducting wire to achieve this goal and the effects are confirmed experimentally [3]. We are now building test equipment for examining the performance of a shielding ring in a bulk rotating machine. This paper reports the test result for the shielding ring applied to the bulk superconducting rotor that is a part of the test equipment.