Influence of AC magneticfield on a rotating machine with Gd-bulk HTS field-pole magnets
Influence of AC magneticfield on a rotating machine with Gd-bulk HTS field-pole magnets
复制标题
交流磁场对带有 Gd 块状高温超导场极磁体的旋转电机的影响
DOI：
10.1109/tasc.2010.2084985
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发表时间：
2011
期刊：
影响因子：
--
通讯作者：
H. Hayakawa
中科院分区：
文献类型：
--
作者：
M. Miki,B. Felder;K. Tsuzuki;Z. Deng;N. Shinohara;M. Izumi;T. Ida;H. Hayakawa
采用轴向式电机对Gd123体进行了8磁场转子极同步旋转研究。采用非晶磁性粒子Fe-B-Si-Nb-Cr-Cu （MP）掺杂和未掺杂的Gd123包的场极。在同步操作前后，研究了在40 K的操作温度下，体块上捕获磁通的变化。在同步旋转5小时后，未掺杂MP的Gd123包体表面捕获的积分通量衰减为7.2%，掺杂MP的Gd123块体的衰减为4.1%。目前的研究结果表明，降低工作温度可能有利于避免交流损耗。这也导致了另一个互补的结论，即从高温超导体的实际应用的角度来看，与液氮冷却相比，采用冷凝氖气冷却系统是一个合适的选择。此外，掺杂MP合金颗粒的Gd123在40 K下具有实用的磁通捕获功能。
A synchronous rotation study with eight field rotor pole of Gd123 bulks was performed with the axial-type motor. The field pole of Gd123 packs with and without doped amorphous magnetic particles Fe-B-Si-Nb-Cr-Cu (MP) were employed. Before and after the synchronous operation, the change of the trapped magnetic flux on the bulk was investigated at the operating temperature of 40 K. The observed decay of the trapped integrated flux on the surface of Gd123 packs after 5 hours synchronous rotation were 7.2% for the Gd123 pack without MP doping and 4.1% for the Gd123 bulk doped with MP. The present result indicates that the lowering operation temperature may be beneficial to avoid the AC loss. This also leads to another complementally conclusion that the employment of the condensed neon gas cooling system is a suitable choice from the viewpoint of practical applications of the HTS bulks in contrast to liquid nitrogen cooling. In addition, the Gd123 doped with MP alloy particles provide a practical magnetic flux trapping function at 40 K.