Improving Surface Insulation Ability by Controlling Charging in Vacuum

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Bibliographic Information

Other Title
  • 帯電制御による真空中絶縁スペーサの耐圧向上
  • タイデン　セイギョ　ニ　ヨル　シンクウ　チュウ　ゼツエン　スペーサ　ノ　タイアツ　コウジョウ

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Abstract

This paper describes the method that controls the surface charging of a solid insulating spacer used in vacuum. Vacuum environment is used for various kinds of electrical and electronic apparatus and most of them suffer from the electrical insulation along solid dielectrics. The insulation length of such dielectrics varies from some hundreds of microns up tolOOOmm depending on the apparatus. From the view point of electrical insulation in vacuum, the weakest point resides on the surface; the discharge along insulator surface. The surface discharge in vacuum is triggered by charging of the surface, and it is thus important to suppress such charging. The first section of this paper emphasizes the importance of studying surface discharge in vacuum and briefly reviews the theoretical basis of the charging of insulators as well as flashover mechanisms in vacuum. In the second section we introduce the promising mechanism that explains surface charging in vacuum. In the third section several methods for controlling surface charge accumulation developed so far by many researchers are introduced. In the later sections we introduce our recent theoretical and experimental studies that demonstrate effectiveness of surface treatment of an insulator to suppress charging and to improve its insulation strength.

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Details 詳細情報について

  • CRID
    1050581168901956352
  • NII Article ID
    120006881635
  • NII Book ID
    AN10426571
  • HANDLE
    11094/76784
  • ISSN
    09189890
  • Text Lang
    ja
  • Article Type
    journal article
  • Data Source
    • IRDB
    • CiNii Articles

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