论文标题
通过脉冲型磁通泵在YBCO线圈中泵送电流的特性
Characteristics of Pumping Current in a YBCO Coil by a Pulse-Type Magnetic Flux Pump
论文作者
论文摘要
2G高温超导（HTS）电线，YBCO涂层导体，执行更好的携带电流能力，该功能有可能应用于HTS磁铁的制造中。本文使用传导冷却系统中的脉冲型磁通泵和液氮浴（LN2）的低温环境提出了YBCO线圈的泵送电流的实验结果。在传导冷却系统中使用的通量泵的优化是添加了君士坦坦加热器，以使泵桥的温度保持一定值。在传导冷却系统中研究了YBCO线圈在不同温度下的激发效应。当YBCO板的温度（即泵桥）的温度在50 K至80 K的范围内时，就会发生YBCO线圈中的泵送电流的快速增加。还研究了饱和泵送电流和输入电压之间的关系，还研究了磁极数量。使用七极构型，当频率为20 Hz并且电压为6 V时，饱和电流可以达到155A。LN2冷却系统中通量泵的激发特性显示脉冲型磁通泵用于HTS磁铁的实际应用。
2G high temperature superconducting (HTS) wires, YBCO coated conductors, perform a better carrying current capability, which is potentially applied in the manufacture of HTS magnets. This paper presents the experimental results of the pumping current for YBCO coils using a pulse-type magnetic flux pump in the conduction-cooling system and liquid nitrogen bath (LN2) cryogenic environment. Optimization of the flux pump used in the conduction-cooling system is that a constantan heater was added to keep the temperature of the pumping bridge at a certain value. Excitation effects of the YBCO coil at different temperatures were investigated in the conduction-cooling system. A fast-increasing of pumping current in the YBCO coil occurs when the temperature of the YBCO sheet (i.e., pumping bridge) is in the range of 50 K to 80 K. The relationships between saturated pumping current and input voltage, working frequency, numbers of magnetic poles were also studied. Using the seven-pole configuration, the saturated current can reach 155 A when the frequency is 20 Hz and the voltage is 6 V. The excitation characteristics of the flux pump in the LN2 cooling system show the possibility of the pulse-type magnetic flux pump for the practical application of HTS magnets.
