帯電人体の金属棒を介した気中放電に対する放電電流の限界波形と等価回路を用いた計算

カテゴリ: 論文誌(論文単位)

グループ名: 【A】基礎・材料・共通部門

発行日: 2016/06/01

タイトル(英語): Limit Waveform and Calculation of Discharge Current through Hand-held Metal Piece for Air Discharge from Charged Human using Equivalent Circuits

著者名: 高　義礼（釧路工業高等専門学校 電子工学科），石田　武志（（株）ノイズ研究所），藤原　修（名古屋工業大学）

著者名(英語): Yoshinori Taka (Department of Electronic Engineering, National Institute of Technology, Kushiro College), Takeshi Ishida (Noise Laboratory Co., LTD.), Osamu Fujiwara (Nagoya Institute of Technology)

キーワード: 帯電人体，気中放電，放電電流，等価回路，限界波形　　charged human body，air discharge，discharge current，equivalent circuit，limit waveform

要約(英語): In the electrostatic discharge (ESD) immunity testing specified by the IEC 61000-4-2, an ESD generator simulating a human ESD is normally used for contact discharges, while air discharge testing is also being accepted despite the fact that the testing is likely to provide inconsistent test results from the poor reproducibility of discharge current waveforms. To confirm to what extent air discharges affect the discharge currents with respect to charge voltages and approach speeds, we measured the discharge currents through a hand-held metal piece with fast and slow approaches from a male subject charged from 1000 V to 8000 V, which were calculated from two equivalent circuits. An equivalent circuit with an ideal switch in view of a spark was used to show the limit waveform of the discharge current through the inverse Fourier transform from the measured human impedance. The other equivalent circuit consisting of a time varying spark resistance and lumped circuit parameters derived from the human body impedance was used to estimate the discharge current based on a spark resistance formula. As a result, we found that the first equivalent circuit provides the maximum current peak and minimum rise time of discharge currents regardless of the charge voltages or approach speeds, while under an appropriate spark length according to the charge voltage the second equivalent circuit gives the discharge current waveform that approximately coincides with the measured result.

本誌: 電気学会論文誌A（基礎・材料・共通部門誌） Vol.136 No.6 （2016） 特集：広帯域電磁界の電子機器および通信に対する障害

本誌掲載ページ: 353-358 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejfms/136/6/136_353/_article/-char/ja/