直接冷却超导磁储能磁体加载实验与热分析  

Loading experiment and thermal analysis of directly cooled magnet of SMES system

作　　者：吴钢[1] 王惠龄[1] 谢江波[1] 唐跃进[1] 

机构地区：[1]华中科技大学能源与动力工程学院

出　　处：《华中科技大学学报（自然科学版）》2007年第4期85-88,132,共5页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：国家高技术研究发展计划资助项目(2002AA306331-4);国家自然科学基金资助项目(51076013)

摘　　要：阐述了35 kJ高温超导磁储能系统及其实验装置,通过对直接传导冷却超导磁储能磁体进行电流加载实验,对磁体进行了动态热分析.研究表明:在变流器对超导磁储能磁体充放磁储能过程中,磁滞损耗是功率损耗的主要部分,对磁体温升影响最大;减小变流器直流侧频率有利于抑制磁体温升.基于热稳定性分析了导冷结构的优化因素,指出直接冷却导冷结构应强化关键部位(磁体上部)的传热,以减小磁体轴向温差.The 35 kJ high temperature superconducting magnetic energy storage （SMES） system with the experiment equipment was expounded. The dynamic heat analysis of the magnet of SMES was conducted through the current load test on the directly conduction cooled magnet. The research results were got as follows： when the converter charges and discharges the magnet for energy storage, the hysterics loss is the main part of power loss, and furthest contributes to temperature rise; reducing the current frequency at the side of direct current is of benefit to restraining temperature rise. The optimizing factors of the cool-guide structure were analyzed based on the heat stability theory, and it was found that heat transfer of its key part （at the top of the magnet） must be strengthened to reduce axial temperature difference of the magnet.

关 键 词：直接冷却 超导磁储能 磁体 电流加载 热分析 

分 类 号：TB66[一般工业技术—制冷工程] O511.9[理学—低温物理]