Development of High Voltage Power Supply for Artificial Satellites

高压电源（hvps）经常被科学卫星上的仪器所使用，但是低重量、高性能和高可靠性的电源并不容易获得。特别是防止高压vps的真空放电是至关重要的。这项研究的目的是建立星载hvps的专门知识。为此目的，我们进行了各种实验室实验。此外，我们密切注意1993年2月发射的宇宙x射线卫星ASCA上的GIS（气体成像光谱仪）仪器所使用的8千伏特高压脉冲的在轨性能。我们与meiisei Electric Co.Ltd和Tamura Corporation ltd合作开发了这些hvps，这些hvps运行正常。根据这些结果，我们可以列出以下制作hvps的指导方针。(1)防止高压vps真空放电的最好方法是利用高真空本身的高电阻率。(2)高压电路应避免固体灌封，但其保形涂层是有效的。(3)为防止发射振动，不应使用发泡材料。这些材料偶尔会散发出气体，导致危险的排放。

High-voltage power supplies (HVPSs) are often used by instruments onboard scientific satellites, but those with low weight, hight performance, and high reliability have not been easily available. In Particular, it is of vital importance to prevent the HVPS from vacuum discharges.This research has aimed at establishing the know-hows of satellite-borne HVPSs. For that purpose we carried out various laboratory experiments. FurThermore, we closely followed inorbit performance of 8 kilovolt HVPSs used in the GIS (Gas Imaging Spectrometer) instrument onboard the cosmic X-ray setellite ASCA,launched in February 1993. We developd these HVPSs under collaboration with Meisei Electric Co.Ltd and Tamura Corporation Ltd.These HVPSs have been performing normally.From these result, we can list up following guidelines in fabricating the HVPSs.(1) The best way of preventing the HVPS from vacuum discharges is to utilize the high electric resistivity of the high vacuum itself.(2) Solid potting of the high voltage circuits should be avoided, but their conformal coating is effective.(3) For the protection against launch vibration, no foaming material should be used. Such materials would occasionally make sporadic outgas, leading to hazardous discharges.