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史景文,朱理铭,周大进,程翠华,赵勇.悬浮杜瓦通过永磁轨道开断处的纵向力研究[J].低温物理学报,2021,(5):311-318. [点击复制]
- SHI Jingwen,ZHU Liming,ZHOU Dajin,CHENG Cuihua,ZHAO Yong.Study on the Longitudinal Force of Levitation Dewar Running through the Breaking Border of Permanent Magnet Guideway[J].LOW TEMPERATURE PHYSICAL LETTERS,2021,(5):311-318. [点击复制]
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| 悬浮杜瓦通过永磁轨道开断处的纵向力研究 |
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史景文1,2, 朱理铭1,2, 周大进1,2, 程翠华3, 赵勇1,2,4
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| (1.福建师范大学物理与能源学院, 福建福州 350117;2.福建省先进高场超导材料与工程协同创新中心, 福建福州 350117;3.成都大学高等研究院, 四川成都 610106;4.西南交通大学超导与新能源研究开发中心, 四川成都 610031) |
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| 摘要: |
| 为了探索悬浮杜瓦通过永磁轨道开断处的纵向力变化规律及影响因素, 建立高温超导磁浮系统的理论模型, 推导了纵向力表达式, 进一步搭建实验平台, 在不同通过速度、 场冷高度和工作高度条件下, 对悬浮杜瓦脱离与进入永磁轨道时受到的纵向力进行测试. 理论与实验结果表明: 悬浮杜瓦通过永磁轨道开断处时受到纵向力作用,完全脱离前与进入后为阻力, 完全脱离后与进入前为主动力; 在低速运行范围内, 通过速度对纵向力的影响不大;随着工作高度的降低, 纵向力增大; 随着场冷高度的升高, 纵向力增大. 以上研究为高温超导磁浮系统的切换与发射提供设计参考. |
| 关键词: 高温超导块, 永磁轨道, 纵向力, 脱离与进入 |
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| Study on the Longitudinal Force of Levitation Dewar Running through the Breaking Border of Permanent Magnet Guideway |
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| Abstract: |
| In order to explore the law of longitudinal force change and influencing factors of the levitation dewar running through the breaking border of permanent magnet guideway, the theoretical model of the high-temperature superconductor maglev system was established 9 the longitudinal force expression was deduced 9 and the experimental platform was further built. Under the conditions of different running speed (V) , cooling height (CH) and working height (WH), test the longitudinal force of the levitation dewar when it leaves and enters the permanent magnet guideway. The theoretical and experimental results show that the levitation dewar is subjected to the longitudinal force through the breaking border of permanent magnet guideway, and completely before detachment and after enter are resistance, completely after detachment and before enter are thrust； In the range of low-speed running, the running speed has little effect on longitudinal force； With the working height decreases, the longitudinal force increases； With the cooling height increases, the longitudinal force increases. The above research provides design reference for the switching and launching of the high-temperature superconductor maglev system. |
| Key words: High temperature superconductor, Permanent magnet guideway, Longitudinal force, Detachment and entry |
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