Coupling losses in cable-in-conduit conductors for LHD poloidal coils
Coupling losses in cable-in-conduit conductors for LHD poloidal coils
复制标题
LHD 极向线圈的电缆导管导体中的耦合损耗
DOI：
10.1016/s0920-3796(02)00279-x
复制
发表时间：
2003
影响因子：
1.7
通讯作者：
T. Satow
中科院分区：
文献类型：
--
作者：
K. Takahata;T. Mito;H. Chikaraishi;S. Imagawa;T. Satow
在三种不同的波形下，测量了大螺旋装置（LHD）极向线圈的耦合损耗。极向线圈的超导体是由超临界氦冷却的导管中电缆导体（CICC）。在实验中，工作电流同时改变与一个给定的波形，和焓增加，由于损失观察到在进口和出口的氦冷却剂。通过电阻性接触点的股间耦合电流是造成损耗的主要原因。耦合电流的时间常数估计通过使用与电路模型的解析表达式。结果表明，从10-1000秒的顺序的时间常数的广泛分布。
Coupling losses in Large Helical Device (LHD) poloidal coils have been measured during operations with three different waveforms. The superconductors of the poloidal coils are cable-in-conduit conductors (CICC) cooled by supercritical helium. In the experiments, the operating currents were simultaneously changed with a given waveform, and the enthalpy increase due to the losses was observed at the inlet and outlet of the helium coolant. Inter-strand coupling currents through resistive contact points mainly caused the losses. Time constants of the coupling currents are estimated by using analytical expressions with a circuit model. The results indicate a broad distribution of the time constants from the order of 10–1000 s.