Description and test results of a current collection system for continuous duty HPG

Electrical Contacts - 1991 Proceedings of the Thirty-Seventh IEEE HOLM Conference on Electrical Contacts Pub Date : 1900-01-01 DOI:10.1109/HOLM.1991.170815

A. Challita, B. K. Ahrens, D. Bauer

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引用次数: 1

Abstract

A current collection system which includes a cooling system capable of operating at high velocities and current densities is needed before a continuous-duty compact HPG (homopolar generator) can be designed and built. The authors developed a current collection system that is capable of continuous operation at current densities of 40 MA/m/sup 2/ and a tip speed of 250 m/s. The current collection system is an integrated current collection/actuation/cooling system. The current collectors are solid copper leaves, 0.33 mm thick, that are mounted on a circular holder. The actuation system is a piston that actuates the collectors onto the slipring axially. Thin film evaporation cooling, at the interface between the collector and slipring, is used to remove the heat generated. Thin coolant films are wiped on the slipring. A slipring current density of 13 MA/m/sup 2/ at 175 m/s for 20 s was demonstrated. The system reaches steady state operation in 4 s. A heat removal capability of 15 MW/m/sup 2/ with the thin film evaporation technique was demonstrated. The contact resistance density was about 20n Omega -m/sup 2/.<>

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一种连续工作高压pg电流采集系统的描述和测试结果

在设计和制造连续工作紧凑型HPG(同极发电机)之前，需要一个电流收集系统，包括一个能够在高速度和高电流密度下运行的冷却系统。作者开发了一种电流收集系统，该系统能够在电流密度为40 MA/m/sup / /和尖端速度为250 m/s的情况下连续工作。电流收集系统是一个集成的电流收集/驱动/冷却系统。电流收集器是0.33毫米厚的实心铜片，安装在一个圆形支架上。驱动系统是一个活塞，驱动收集器轴向滑动。薄膜蒸发冷却，在集热器和滑动之间的界面，被用来去除产生的热量。在滑块上抹上薄薄的冷却液膜。在175 m/s下持续20 s的滑动电流密度为13 MA/m/sup /。系统在4秒内达到稳态运行。利用薄膜蒸发技术可获得15 MW/m/sup / /的散热能力。接触电阻密度约为20n ω -m/sup 2/。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Electrical Contacts - 1991 Proceedings of the Thirty-Seventh IEEE HOLM Conference on Electrical Contacts

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