• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Composite Structures >Numerical simulation of the electro-thermo-mechanical behaviors of a high- temperature superconducting cable
【24h】

Numerical simulation of the electro-thermo-mechanical behaviors of a high- temperature superconducting cable

机译：高温超导电缆电热力学行为的数值模拟

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The performance of a multi-layer composite superconducting tape depends on operating conditions, such as the applied field, temperature and stress. Therefore, accurate analysis of the electromagnetic-thermo-mechanical coupling behaviors of the high-temperature superconducting (HTS) cable is important to understanding the mechanism of interaction among different physical fields and the success of optimizing the design of the HTS cable structure. This paper develops a three-dimensional finite element model based on the twisted-stack slotted-core HTS cable structure for electro-thermo-mechanical analysis. Critical currents of a single multi-layer composite superconducting tape and the whole HTS cable structure are calculated. Profiles of the magnetic field, current density, temperature and stress are also obtained. It is found that the selection of tapes having higher critical current enhances the transport performance of the cable. Current densities are nonuniformly distributed in the stack. From the bottom to the top of the stack, the current density first increases and then decreases, in inverse relation to the magnetic field. Cooling with liquid helium improves the cable transport capacity. The temperature of the superconducting tapes is slightly higher than that of the aluminum core, but the stress in the aluminum core is greater than that in the superconducting tapes. The results imply that the transport capacity of the cable can be improved by selecting superconducting tapes with high critical current density and arranging them in stacks in a manner consistent with the electromagnetic field distribution. The model also explains the mechanism of interaction between different physical fields. It is a useful tool that clarifies the multiphysics coupling behaviors of an HTS cable with complex structure, and provides a theoretical reference for the design of novel HTS cable structures.
机译：多层复合超导带的性能取决于操作条件，例如施加的电场，温度和应力。因此，准确地分析高温超导（HTS）电缆的电磁-热-机械耦合行为对于了解不同物理场之间的相互作用机理以及优化HTS电缆结构设计的成功至关重要。本文基于双绞线槽芯高温超导电缆结构，建立了三维有限元模型，用于电热机械分析。计算了单个多层复合超导带和整个HTS电缆结构的临界电流。还可以获得磁场，电流密度，温度和应力的分布图。发现选择具有更高临界电流的带子可以增强电缆的传输性能。电流密度在堆栈中分布不均匀。从堆的底部到顶部，电流密度首先增加，然后减少，与磁场成反比。用液氦冷却可提高电缆的传输能力。超导带的温度略高于铝芯，但铝芯的应力大于超导带的应力。结果表明，可以通过选择具有高临界电流密度的超导带并将其以与电磁场分布相一致的方式排列成堆的方式来提高电缆的传输能力。该模型还解释了不同物理场之间相互作用的机制。这是一个有用的工具，它可以阐明结构复杂的HTS电缆的多物理场耦合行为，并为新型HTS电缆结构的设计提供理论参考。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号