Effect of DC Pre-Discharge on the Generation of Atmospheric Pulsed Microdischarges

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概要

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• More than 2.5 kV pulsed voltages were required to obtain atmospheric pulsed microdischarges at a gap separation of more than 1.0 mm. We have developed a DC pre-discharge method for decreasing the amplitude of the repetitive pulsed voltages in the generation of atmospheric pulsed microdischarges using a miniature helium gas flow. The electrode configuration consisted of three electrodes: a nozzle, a hollow electrode with a hole having a diameter of 0.6 mm, and a plain plate. The hollow electrode separated the DC glow pre-discharge from pulsed discharges, which was the main discharge. Between the nozzle and hollow electrodes, the DC glow pre-discharge formed active particles, which were provided to the gap separation between the hollow and plate electrodes by the helium gas flow through the hollow electrode. The active particles supplied with the helium gas decreased the breakdown voltage of the pulsed microdischarges. The mode of the pulsed microdischarges was controlled by the polarity of the pulsed voltages applied to the plate electrode as the pulsed arc and glow microdischarges were obtained by positive and negative pulsed voltages, respectively. In addition to the glow pre-discharge, we were able to use the corona pre-discharge, which was generated by increasing the hole diameter of the hollow electrode to 1.2 mm. Although the breakdown voltage increased with the transition from the glow to corona pre-discharge, it was effective in reducing the power consumption of the pre-discharge, as compared with the glow pre-discharge.

• 2012-04-25

著者

• Ibuka Shinji

  Depeartment of Electrical and Electronic Engineering, Tokyo Institute of Technology, Meguro, Tokyo 152-8552, Japan

• Ishii Shozo

  Depeartment of Electrical and Electronic Engineering, Tokyo Institute of Technology, Meguro, Tokyo 152-8552, Japan

• Suzuki Yuta

  Depeartment of Electrical and Electronic Engineering, Tokyo Institute of Technology, Meguro, Tokyo 152-8552, Japan

• Kikuchi Jun

  Depeartment of Electrical and Electronic Engineering, Tokyo Institute of Technology, Meguro, Tokyo 152-8552, Japan

• Muto Takaaki

  Depeartment of Electrical and Electronic Engineering, Tokyo Institute of Technology, Meguro, Tokyo 152-8552, Japan

関連論文

• Effect of DC Pre-Discharge on the Generation of Atmospheric Pulsed Microdischarges

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