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Slip Ring Test Assembly With Increased Breakdown Voltage Limit for High-Voltage Bus Satellites
IEEE Aerospace and Electronic Systems Magazine ( IF 3.6 ) Pub Date : 2020-08-01 , DOI: 10.1109/maes.2020.2993388
F. Avino , B. Gaffinet , D. Bommottet , A. Howling , I. Furno

In this article, a setup including a passive gas breakdown mitigation technique for satellite slip ring assemblies (SRAs) is introduced and tested. The setup features a central conducting ring, separated from two external conducting limiting discs (LDs) by insulating rings. The characteristic breakdown curves are measured as a function of the surrounding pressure by biasing the central ring and setting the LDs at a variable voltage. The minimum breakdown voltage is increased from ∼420 to ∼860 V by biasing the LDs at one half of the voltage applied to the central ring. This solution is further applied on a test-SRA that includes the main features of a standard cylindrical SRA: a stack of conducting rings on which conducting brushes slip to ensure the electrical contact between moving components. The minimum of the breakdown curve is raised from ∼400 V for the grounded LDs to ∼600 V for the passively biased LDs. This result confirms the possibility to improve SRA protection for the entire pressure range encountered by a satellite during its operational life, from atmospheric pressure to in-orbit high-vacuum, meeting the requirements for the next generation of satellites.

中文翻译:

用于高压总线卫星的具有增加击穿电压限制的滑环测试组件

在本文中,介绍并测试了一种包括用于卫星滑环组件 (SRA) 的被动气体击穿缓解技术的设置。该装置具有一个中央导电环,通过绝缘环与两个外部导电限制盘 (LD) 隔开。通过偏置中心环并将 LD 设置在可变电压下,特性击穿曲线作为周围压力的函数进行测量。通过将 LD 偏置为施加到中心环的电压的一半,最小击穿电压从 ~420 V 增加到 ~860 V。该解决方案进一步应用于测试 SRA,该测试 SRA 包括标准圆柱形 SRA 的主要特征:一堆导电环,导电刷在其上滑动以确保移动部件之间的电气接触。击穿曲线的最小值从接地 LD 的 ~400 V 上升到被动偏置 LD 的 ~600 V。这一结果证实了提高卫星在其使用寿命期间遇到的整个压力范围的 SRA 保护的可能性,从大气压到在轨高真空,满足下一代卫星的要求。
更新日期:2020-08-01
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