运动外磁场下高温超导块材悬浮特性及变化机理研究

项目名称： 运动外磁场下高温超导块材悬浮特性及变化机理研究

项目编号： No.51307147

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 电工技术

项目作者： 邓自刚

作者单位： 西南交通大学

项目金额： 26万元

中文摘要： 高温超导磁悬浮技术以其独特的无源自稳定优势为未来轨道交通发展提供了新途径。针对人们对高温超导磁悬浮车动态运行状态的疑虑，本课题提出了运动外磁场下永磁轨道上方高温超导块材动态悬浮特性和变化机理的研究。在升级改造高温超导磁悬浮动态测试平台的基础上，完成当前最高实验研究速度（300 km/h）及在不同工作模式、不同运动模式和不同人为模拟实验条件下超导块材动态悬浮实验；并建立温度和磁场测试模块，揭示运动过程中块材的悬浮力、温度和磁场变化行为关系，分析其内在的磁热耦合、热交换及能量损耗等问题，协助完善确认高温超导磁悬浮动态特性变化的影响因素和作用机理；最终从应用的角度预见未来高温超导磁悬浮车在实际运行状况中可能出现的现象、机理上存在的优势或风险。预计研究结果将有助于丰富目前未知的高温超导磁悬浮动态运行数据，为未来高温超导磁悬浮试验线及其他领域的应用提供重要理论和科学依据。

中文关键词： 高温超导；动态悬浮力；磁滞损耗；温度效应；涡流阻尼器

英文摘要： High temperature superconducting (HTS) magnetic levitation (Maglev) technology is one of the future potential rail transit solutions attributed to the unique passive self-stable levitation. The proposed project devotes to investigate the phenomenon and mechanism of levitation force variation of bulk high temperature superconductors (HTSCs) applied in a moving magnetic field above permanent magnet rails (PMRs) specific to the questions about the dynamic running state of the HTS Maglev vehicle system. Based on the updating and renovation work of the HTS Maglev dynamic measurement system, the current highest experimental speed condition is planned to be achieved up to 300 km/h in this project. Dynamic levitation experiments of bulk HTSCs are going to be accomplished in the conditions such as different working modes, different running modes and different artificial experimental conditions etc. Meantime, the temperature and trapped flux monitoring functions will be built to reveal the variation relationships among levitation force, temperature and inner trapped flux of bulk HTSCs during the above running processes. Then the inherent magnetic-thermal coupling, heat exchanging and energy losses problems will be discussed in detail with lots of research work to help improving the scientific understanding of the HTS Magl

英文关键词： High temperature superconducting；dynamic levitation force；magnetic hysteresis loss；temperature effect；eddy current damper