The mathematical model of electromagnetic repulsion operating mechanism of fast vacuum transfer switch (FVTS) for 400 V/630 A/12.5 kA dual power supply system is proposed, and two-dimensional rotational symmetry model of electromagnetic field simulation is established in this paper. Taking the repulsion peak value, velocity characteristics and starting time as the design goals, through analysis and comparation of the dynamic characteristics of the double coil and the metal disc repulsion mechanism, the design scheme of the operating mechanism for the FVTS with short stroke and short opening time is realized. Based on the comparative study of simulation and experiment of vacuum transfer switch prototype with fast repulsion mechanism, the 5.5 mm stroke can be completed within 5ms under the operating condition of 320 V capacitor voltage and 8000 μF, which meets the engineering application requirements of fast switching for the sensitive load.

中文翻译：

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快速真空转换开关操作机构动态特性分析与实验研究

提出了适用于400 V/630 A/12.5 kA双电源系统的快速真空转换开关(FVTS)电磁斥力操作机构的数学模型，建立了电磁场仿真二维旋转对称模型。以斥力峰值、速度特性和启动时间为设计目标，通过双线圈和金属盘斥力机构的动态特性分析比较，得出短行程短行程FVTS操动机构设计方案。开放时间实现。基于具有快速斥力机构的真空转换开关样机的仿真与实验对比研究，在320V电容电压和8000μF的工作条件下，5.5mm行程可在5ms内完成，