高温超导销钉式磁悬浮系统的阻尼特性

IF 1.8 3区 工程技术 Q3 PHYSICS, APPLIED
Xucheng Zhou , Yi Luo , Yuchen He , Can Peng , Peiyang Zeng , Yan Li , Zigang Deng
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引用次数: 0

摘要

近几十年来,高温超导(HTS)针式磁悬浮取得了快速发展。高温超导引脚式磁悬浮的悬浮系统主要由内置高温超导块体的杜瓦和永磁导轨(PMG)组成。对于磁悬浮运输系统而言,阻尼对于减振非常重要,而 HTS 引脚式磁悬浮系统的固有阻尼特性尚未得到明确评估。本文通过实验和模拟分析了 HTS 销轴磁悬浮系统的阻尼特性。实验测量了系统在自由振动和强迫振动下的动态响应。采用对数包络法评估自由振动下的系统阻尼。利用交叉相关函数获得系统振动信号和激励信号之间的相位差,然后计算强迫振动条件下的系统阻尼。此外,还建立了一个包括 HTS 块体、永磁发电机和杜瓦导电壳在内的二维有限元模型,以评估系统振动时各组件产生的阻尼力。此外,还考虑并分析了杜瓦导电壳的额外涡流阻尼。最后,从系统阻尼和 HTS 块体热稳定性的角度,提出了选择杜瓦外壳材料的建议。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Damping characteristics of High-Temperature superconducting pinning maglev levitation system

High-temperature superconducting (HTS) pinning maglev has achieved rapid development in recent decades. The levitation system of the HTS pinning maglev is mainly composed of Dewar with built-in HTS bulks and permanent magnet guideway (PMG). For a maglev transportation system, damping is important for vibration attenuation, and the inherent damping characteristics of the HTS pinning maglev system have not been evaluated clearly. In this paper, the damping characteristics of the HTS pinning maglev system are analyzed through experiments and simulations. Experiments are conducted to measure the dynamic responses of the system under free and forced vibrations. The logarithmic envelope method is used to evaluate the system damping under free vibration. The cross-correlation function is utilized to obtain the phase difference between the system vibration signal and excitation signal, and then calculate the system damping under forced vibration conditions. In addition, a two-dimensional finite element model including HTS bulks, PMG, and Dewar conductive shells is established to evaluate the damping force generated by each component during system vibrations. The additional eddy current damping of the conductive Dewar shell is considered and analyzed. Finally, from the perspective of system damping and thermal stability of HTS bulks, suggestions for selecting Dewar shell materials are proposed.

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来源期刊
Cryogenics
Cryogenics 物理-热力学
CiteScore
3.80
自引率
9.50%
发文量
0
审稿时长
2.1 months
期刊介绍: Cryogenics is the world''s leading journal focusing on all aspects of cryoengineering and cryogenics. Papers published in Cryogenics cover a wide variety of subjects in low temperature engineering and research. Among the areas covered are: - Applications of superconductivity: magnets, electronics, devices - Superconductors and their properties - Properties of materials: metals, alloys, composites, polymers, insulations - New applications of cryogenic technology to processes, devices, machinery - Refrigeration and liquefaction technology - Thermodynamics - Fluid properties and fluid mechanics - Heat transfer - Thermometry and measurement science - Cryogenics in medicine - Cryoelectronics
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