Rotation Test of a Superconducting Bulk Rotor Shielded With Superconducting Rings
Rotation Test of a Superconducting Bulk Rotor Shielded With Superconducting Rings
复制标题
超导环屏蔽超导转子旋转试验
DOI：
10.1109/tasc.2014.2379703
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发表时间：
2015
影响因子：
1.8
通讯作者：
J. Ogawa and O. Tsukamoto
中科院分区：
文献类型：
--
作者：
K Yamagishi;J. Ogawa and O. Tsukamoto
在本文中，我们构建了测试设备的旋转电机，使用超导散装转子，并进行了旋转测试。当使用超导体转子时，脉动磁场会产生交流损耗，减小其俘获磁通是可能的。测试中的旋转电机的性能受到由波动的交流磁场产生的交流损耗的影响。我们在本文中使用的轴向型同步电动机，其中的定子线圈产生的磁场导致转子旋转的电机建模。然后我们测量了定子线圈对超导体转子的影响。首先，我们证实，散装转子模块的温度得到适当的控制，并可以产生一个被困磁通量等于零场冷却磁化过程中。同时磁化两个或多个散装的技术被使用。接下来，我们在低速下进行旋转测试。试验期间的最大转速为300 r/min。稳态转速下的运行时间为600 s。定子线圈产生的磁场的最大值为50 mT。最后，我们证实了由超导导线制成的屏蔽环降低了波动磁场的影响。
In this paper, we constructed test equipment for a rotating machine that uses a superconducting bulk rotor and performed a rotation test. When a superconducting bulk rotor is used, a fluctuating magnetic field generates ac loss, it is possible to decrease its trapped magnetic flux. Performance of the rotating machine under test was influenced by the ac loss generated by a fluctuating ac magnetic field. We modeled the motor used in this paper on an axial-type synchronous motor, where the magnetic field generated by the stator coils causes the rotor to rotate. We then measured the influence of the stator coils on the superconducting bulk rotor. First, we confirmed that the temperature of the bulk rotor modules was properly controlled and could generate a trapped magnetic flux equal to that during zero-field-cooled magnetization. A technique for magnetizing two or more bulks concurrently was used. Next, we performed the rotation test at low speed. The maximum rotational speed during the test was 300 r/min. The operation time at a steady-state speed was 600 s. The maximum value of the generated magnetic field of the stator coils was 50 mT. Finally, we confirmed that a shielding ring made of superconducting wire decreased the influence of a fluctuating magnetic field.