摘要
在场冷和零场冷两种条件下对圆柱形永磁体与高温超导块材之间的悬浮特性进行测量和分析。提出一种基于H-法的三维有限元模型用于动态分析永磁体相对高温超导块材运动时的悬浮特性。在此模型中,高温超导体的E-J电磁特性采用幂指数模型表示,有限元非线性方程组采用超松弛迭代的解法。相对于其他有限元模型,本模型具有在相同维度下变量少、计算速度快及易收敛等特点。通过仿真曲线与实验曲线的比较,验证了模型的有效性。
In this paper, we measured and analyzed the levitation characteristics of a cylindrical permanent magnet （PM） and a high-temperatm-e superconductor （HTS） in zero-field cooling and field cooling conditions, respectively. A 3D finite-element model based on H-formulation is provided to simulate the dynamic levitation characteristic acting on the HTS with the PM moving. The E-J power law model is used to analyze the superconducting state. The nonlinear equations are solved by the over-relaxation iterative method. Compared with other finite-element models, the main advantages of the proposed model are with fewer variables, faster computing speed, and easier convergence. We proved the validity of the model by comparing the simulation with the experimental results.
出处
《电工技术学报》
EI
CSCD
北大核心
2015年第13期32-38,共7页
Transactions of China Electrotechnical Society
基金
国家自然科学基金(51377155)
国家高技术研究发展(863)计划(2013AA050803)资助项目
关键词
高温超导体
悬浮特性
H-法
三维有限元模型
幂指数模型
High-temperature superconductor, levitation characteristics, H-formulation, 3 D finite-elementmodel, power law model
