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首页> 外文期刊>Plasma Science, IEEE Transactions on >A Novel Vacuum Interrupter Contact Design for Improved High Current Interruption Performance Based on a Double-TMF Arc Control System
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A Novel Vacuum Interrupter Contact Design for Improved High Current Interruption Performance Based on a Double-TMF Arc Control System

机译：基于双TMF电弧控制系统的新型真空灭弧室触头设计，可改善大电流中断性能

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摘要

A new two-contact system with double-transversal magnetic field (TMF) structure is investigated regarding its potential for high current interruption. It consists of two concentric TMF contacts, in which the inner contact has a disk-shaped structure (spiral contact) and the outer contact a cup-shaped structure. This contact assembly gives several advantages over the use of single-TMF contacts, as the constricted high-current arc might either split between both inner and outer contacts or commute from the inner to the outer contact and continue its rotation. In both scenarios, we expect a better distribution of the arc energy over a larger contact surface. B-field simulation and Lorentz force calculation are carried out to investigate whether two constricted arcs, with one burning on the inner contact and the other on the outer contact, can coexist given their mutual attraction. Single-phase high current interruption tests were carried out to compare the performance of this new double-TMF contact system with that of a standard spiral-type single-TMF one. These tests have revealed superior performance of the new double-TMF contact system, which could interrupt current amplitude at least 20% higher than the one interrupted by the single-TMF contact system.
机译：研究了一种新型的具有双横向磁场（TMF）结构的两触点系统，该系统具有产生大电流中断的潜力。它由两个同心的TMF触点组成，其中内部触点为盘形结构（螺旋形触点），外部触点为杯形结构。该接触器组件相对于使用单个TMF接触器具有多个优势，因为受限制的大电流电弧可能在内部和外部接触器之间分裂，或者从内部到外部接触器转换并继续旋转。在这两种情况下，我们都希望电弧能量在较大的接触表面上具有更好的分布。进行了B场模拟和洛伦兹力计算，以研究两个相互约束的电弧是否可以共存，其中一个在内部触点上燃烧，另一个在外部触点上燃烧。进行了单相大电流中断测试，以比较这种新型双TMF接触系统与标准螺旋型单TMF接触系统的性能。这些测试显示了新型双TMF接触系统的优越性能，该系统可比单TMF接触系统中断的电流幅度高至少20％。

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