The objective of the paper is to study the dynamic characteristics of a repulsion mechanism applied in superconducting fault current limiter (SFCL). A novel fully coupled simulation was established, which involved modules of the flexible-body dynamics, the external circuits, motion equations, multi-body dynamics, transient electromagnetic fields and fatigue analysis. The dynamic characteristics including the velocity, the displacement curve, discharging current, Lorentz force, the stress and strain of each dynamic transmission part in the opening process, was calculated. The vulnerable parts were focused and their fatigue life was calculated. The deviation about discharging current and displacement curve of the fully-coupled simulation was experimentally validated to be less than 8%. Stress concentration positions of the vulnerable parts recommended by the simulation results are the same as fatigue failure positions in the experimental results, which verified the accuracy of the fully coupled simulation.

中文翻译：

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超导故障限流器斥力机构动态特性研究


本文的目的是研究应用于超导故障限流器（SFCL）的斥力机构的动态特性。建立了一种新颖的全耦合仿真系统，包括柔性体动力学、外部电路、运动方程、多体动力学、瞬态电磁场和疲劳分析等模块。计算了开启过程中各动态传动部件的速度、位移曲线、放电电流、洛伦兹力、应力应变等动态特性。重点关注易损部件并计算其疲劳寿命。经实验验证，全耦合仿真的放电电流与位移曲线偏差小于8%。仿真结果推荐的易损件应力集中位置与实验结果中的疲劳失效位置一致，验证了全耦合仿真的准确性。