| 摘要: |
| 本文研究了高温超导闭合线圈的重要励磁方式——持续电流开关（persistent current switch）。高温超导闭合线圈在各种场合中被广泛地应用和研究。为了使高温超导线圈能够工作在持续电流模式（persistent current mode）下，需要持续电流开关利用超导体在超导状态和电阻状态之间的转换来实现开关状态的切换，而磁控式持续电流开关具有响应速度快、励磁效率较高等优点，因而在闭合超导线圈的励磁中具有广阔应用前景。本文提出一种基于动态阻抗模型的磁控式持续电流开关，将动态阻抗以及磁控式持续电流开关的理论研究与探究实验相结合，深入分析磁控式持续电流开关应用于线圈励磁的影响因素，从而实现动态阻抗的灵活设计以及闭合线圈励磁性能的改善。 |
| 关键词: 高温超导闭合线圈 磁控式持续电流开关 动态阻抗 改善励磁 |
| DOI： |
| 投稿时间：2019-06-13修订日期：2019-06-13 |
| 基金项目: |
|
| Magnetic-Controlled Persistent Current Switch Based on the Model of Dynamic Resistance |
|
Lin Jingbo
|
| (Shanghai Jiao Tong University) |
| Abstract: |
| This paper studies the important excitation mode of high temperature superconducting closed coils - the persistent current switch. High temperature superconducting closed coils are widely used and studied in various applications. In order for a high-temperature superconducting coil to operate in persistent current mode, a persistent current switch is required to switch between a superconducting state and a resistance state. Due to the advantages of fast response speed and high excitation efficiency, the persistent current switch controlled by magnetic field has broad application prospects in the excitation of closed superconducting coils. In this paper, a model of magnetic-controlled persistent current switch based on dynamic resistance is proposed. The theoretical research and exploration experiments of dynamic resistance and magnetic-controlled persistent current switch are combined to deeply analyze the influencing factors of magnetic-controlled persistent current switch applied to coil excitation, in order to achieve a flexible design of dynamic resistance and improve excitation performance of the closed coil. |
| Key words: High temperature superconducting closed coil magnetic-controlled persistent current switch dynamic resistance improve excitation |