Test in Strong Background Field of a Modular Element of a REBCO 1 MJ High Energy Density SMES
Test in Strong Background Field of a Modular Element of a REBCO 1 MJ High Energy Density SMES
复制标题
REBCO 1 MJ 高能量密度 SMES 模块化元件的强背景场测试
DOI：
10.1109/tasc.2018.2820906
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发表时间：
2018
影响因子：
1.8
通讯作者：
F. Forest
中科院分区：
文献类型：
--
作者：
J. Ciceron;A. Badel;P. Tixador;R. Pasquet;F. Forest
超导储能技术是一种很有前途的脉冲大功率电流源技术。然而，它们具有适度的比能量。利用第二代高温超导体（HTS）带材在液氦中令人印象深刻的性能所提供的新的可能性，博塞项目的目标是建造一个比能量为20 kJ/kg的超导磁储能系统，其范围为兆焦耳（目前的世界纪录是13 kJ/kg）。为了达到如此高的比能量，需要高水平的应力和电流密度。一个全尺寸的原型煎饼，由一个139米长的绝缘高温超导导体，已在格勒诺布尔LNCMI的背景磁场高达8 T的测试。目的是测试煎饼的机械极限，并证明在高电流密度下保护HTS煎饼的可能性，这要归功于电压测量。专用于实验装置的保护系统进行了描述。它允许我们在691 A/mm 2的总电流密度下保护煎饼（即，984 A/mm 2裸带工程电流密度）和由于电阻性外部磁体而导致的噪声背景场下。给出了测量信号的分析和饼的力学性能。
A superconducting magnetic energy storage (SMES) is a promising technology for pulse power current source. Nevertheless, they have modest specific energy. Taking advantage of new possibilities offered by the impressive performances of second generation high-temperature superconductors (HTS) tapes in liquid helium, the BOSSE project has the objective to build an SMES with a specific energy of 20 kJ/kg in the MegaJoule range (present world record is 13 kJ/kg). To reach such a high specific energy, high levels of stress and current density are required. A full-size prototype pancake, made of a 139-m-long insulated HTS conductor, has been tested in background magnetic field up to 8 T in Grenoble LNCMI. The objective was to test the mechanical limits of the pancake and to demonstrate the possibility to protect an HTS pancake at high current density, thanks to voltage measurement. A protection system dedicated to the experimental setup is described. It allows us the protection of the pancake at an overall current density of 691 A/mm2 (i.e., 984 A/mm2 bare tape engineering current density) and under noisy background field due to the resistive outer magnet. The analysis of the measured signals and mechanical performance of the pancake are presented.