DEVELOPMENT OF THE Bi-2212 SUPERCONDUCTOR FOR HIGH VOLTAGE MAGNETS AND EVALUATION OF THE TEMPERATURE AND MAGNETIC STABILITY
DEVELOPMENT OF THE Bi-2212 SUPERCONDUCTOR FOR HIGH VOLTAGE MAGNETS AND EVALUATION OF THE TEMPERATURE AND MAGNETIC STABILITY
复制标题
高压磁体Bi-2212超导体的研制及温度和磁稳定性评价
DOI：
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发表时间：
2003
期刊：
影响因子：
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通讯作者：
Showa Electric Wire
中科院分区：
文献类型：
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作者：
S. Nagaya;N. Hirano;Y. Johgo;S. Ioka;M. Shimada;T. Hasegawa;Showa Electric Wire
人们期望开发用于保护诸如半导体工厂或信息产业之类的工业设施免受瞬时电压骤降的影响的装置，这需要非常大的输出功率。超导磁能存储系统（SMES）是此类设备之一，由超导磁体组成，在运行过程中必须承受高电压，并且要求高可靠性。开发高磁场下大载流能力的超导体对于使SMES变得更小是必不可少的。最近，开发出了一种在强磁场下具有高临界电流密度（Jc）的Bi-2212圆线。它在4.2K时在10T磁场中可承载超过200kA/cm，在20T磁场中可承载超过180kA/cm，这超过了所有常规金属超导体的载流能力。由于所开发的线材具有高磁场稳定性和20 K以下的热稳定性，因此我们可以使用厚的电绝缘体和紧凑的线圈来设计用于高磁场的高压超导磁体。由于其高磁场线圈的高压设计，SMES可以提高能量存储密度和输出功率。一项旨在使用已开发的 Bi-2212 线开发超导线圈以实现最终 10MJ-10MW SMES 的计划正在进行中。在进行瞬时电压暂降的基本性能测试后，由4个电磁线圈组成的10MJ-10MW SMES系统将于2003财年年底建成并进行现场测试。
Development of apparatuses for protecting industrial facilities such as semiconductor plants or information industries from instantaneous voltage dips, which requires very large output power, has been expected. A superconducting Magnetic Energy Storage System (SMES), one of such apparatus, consists of superconducting magnets that must withstand high voltage during operation and require high reliability. The development of superconductors of a large current-carrying capacity in high magnetic fields is indispensable for making SMES smaller. Recently, a Bi-2212 round wire of high critical current density (Jc) in high magnetic field has been developed. It can carry more than 200 k A/cm in a magnetic field of 10 T and 180 kA/cm in a magnetic field of 20 T at 4.2K, which exceeds the current-carrying capability of all conventional metallic superconductors. Since the developed wires have high magnetic field stability and thermal stability below 20 K, we can design high voltage superconducting magnets using thick electrical insulation and compact coils for high magnetic field. It is possible for SMES to enhance energy storage density and output power due to the high voltage design of its high magnetic field coils. A program that aims to develop superconducting coils using the developed Bi-2212 wires for an eventual 10MJ-10MW SMES is ongoing. After carrying out fundamental performance tests for instantaneous voltage dip, the 10MJ-10MW SMES system, consisting of 4 solenoid coils, will be constructed and tested in the field by the end of FY 2003.