Pulsed-field magnetization of bulk HTS magnets in twinned rotor assembly for axial-type rotating machines
Pulsed-field magnetization of bulk HTS magnets in twinned rotor assembly for axial-type rotating machines
复制标题
轴向旋转电机双转子组件中大块高温超导磁体的脉冲场磁化
DOI：
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发表时间：
2006
期刊：
影响因子：
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通讯作者：
M. Kitano
中科院分区：
文献类型：
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作者：
I. Ohtani;H. Matsuzaki;Y. Kimura;E. Morita;H. Ogata;T. Ida;M. Izumi;M. Miki;M. Kitano
研究了高温超导块材的脉冲场磁化及其在轴向气隙旋转同步电机中的应用。为提高旋转机械的输出性能，设计了Gd块转子与固定电枢交替的多转子结构。因此，我们获得了转子磁铁运行的冗余度，而不需要额外的电流引线或滑环。为了评估目前的冗余度，我们展示了上述多转子几何结构中Gd块的脉冲磁场磁化结果。将两个直径60 mm、厚度19 mm的Gd块插入三个涡流型铜线圈中。他们被浸泡在液氮中。脉冲电流作用于三个串联的涡旋型线圈。最大外加磁场为5.7T，上升时间为6.6ms。两种Gd-Bulk的俘获场分别为0.851和0.835 T。我们发现，对于夹在三个电枢涡旋型铜线圈之间的两个Gd块，即双层双转子组件，进行脉冲场磁化是可能的。
We study the pulsed-field magnetization of HTS bulks and its application to a rotating synchronous machine of axial-gap type. To increase the output performance of the rotating machine, the multiple rotor structure is designed with the alternation of the rotor with Gd-bulks and the fixed armature. Thus, we obtain a redundancy for the rotor magnet operation without additional current leads or slip rings. To assess the present redundancy, we show the result of the pulsed-field magnetization for Gd-bulks in the above-mentioned multiple rotor geometry. Two Gd-bulks 60 mm in diameter and 19 mm thick were inserted into three vortex-type Cu coils. They were immersed in liquid nitrogen. The pulsed current was applied to three serial vortex-type coils. The maximum applied magnetic filed was 5.7 T with a rise time of 6.6 ms. The trapped fields for the two Gd-bulk were 0.851 and 0.835 T, respectively. We showed that it is possible to perform pulsed-field magnetization for two Gd-bulks sandwiched between three armature vortex-type Cu coils, i.e., a double-layered twin rotor assembly.