Experimental AC loss analysis of braid type non-inductive coil for superconducting fault current limiter
Experimental AC loss analysis of braid type non-inductive coil for superconducting fault current limiter
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超导故障限流器编织型无感线圈实验交流损耗分析
DOI：
10.1088/1742-6596/1559/1/012101
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发表时间：
2020
期刊：
影响因子：
--
通讯作者：
Song W
中科院分区：
文献类型：
--
作者：
Song W
电阻式超导故障限流器对实现电网和未来电动飞机的稳定与安全起着关键作用。本文介绍了一种用于SFCL的编织型无感线圈的设计与试验。一个内圈和一个外圈用4毫米宽的超级大国电线缠绕在G10管上。通过将内圈和外圈分别串联和并联，实现了编织型无感线圈的两种配置。对这两种无感线圈的交流损耗结果进行了测量和比较，以研究交流损耗与线圈结构和电流分布的关系。结果表明，由于磁场抵消，编织型无感线圈具有较低的交流损耗。与并联相比，内外线圈串联可实现良好的磁场抵消，从而使非感应线圈的临界电流更高，交流损耗更低。
Resistive superconducting fault current limiter (SFCL) plays a key role to realise the stability and safety of power grid and the future electric aircraft. This paper presents the design and test of a braid type non-inductive coil for SFCL. One inner coil and one outer coil were wound around a G10 tube using 4 mm-wide SuperPower wires. Two configurations of the braid type non-inductive coil were achieved by connecting the inner coil and outer coil in series and in parallel, respectively. AC loss results of these two non-inductive coils were measured and compared to investigate the AC loss dependency on coil configuration and current distribution. It has been concluded that braid type non-inductive coil has low AC loss due to magnetic field cancellation. Serial connection of the inner and outer coils leads to a good degree of field cancellation, which results in higher critical current and lower AC loss of the non-inductive coil, compared to parallel connection.
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