導体電流と変位電流の理論方程式の連立定式化と3次元計算手法

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: 2013/07/01

タイトル(英語): Simultaneous Formulation of the Theoretical Equations for Conductor Currents and Displacement Currents and Method of Three Dimensional Calculations

著者名: 田子　一農（(株) 日立製作所日立研究所），楠野　順弘（(株) 日立製作所日立研究所），吉成　清美（(株) 日立製作所日立研究所），三島　彰（(株) 日立製作所情報制御システム社）

著者名(英語): Kazutami Tago (Hitachi Research Laboratory, Hitachi, Ltd.), Nobuhiro Kusuno (Hitachi Research Laboratory, Hitachi, Ltd.), Kiyomi Yoshinari (Hitachi Research Laboratory, Hitachi, Ltd.), Akira Mishima (Infrastructure Systems Company of Hitachi Ltd.)

キーワード: 変位電流，渦電流，連立解法，パワーエレクトロニクス，シミュレーション，高周波インピーダンス　　displacement currents，eddy currents，simultaneous solution method，power electronics，simulation，high-frequency impedance

要約(英語): We propose theoretical formulation to connect the integral equations of conductor currents and differential equations of displacement currents in order to develop analytical techniques related to high-frequency electrical characteristics for noise and surge protection designs. Discretization of the obtained equations by the finite element method leads to only one matrix equation of 3D space and second-time derivative with the unknowns of current vector potentials because the displacement currents can be eliminated. In the frequency domain, the frequency characteristics of displacement currents in insulators and currents in conductors as well as impedances can be obtained with this method. To verify this method, we developed a 3D high-frequency currents calculation program. We calculated the impedances of test objects, and compared them with our measured impedances. The results were as follows. (1) The calculated resonance and anti-resonance frequencies of a simple 1D transmission line were within a 4.5% difference off measured ones below 1GHz. (2) The first resonance frequency of an LCR series circuit formed by the parasitic capacitance of a commercial power module was calculated by taking into account the wiring shape, and this frequency matched the measured value within 4.2%. These results validate our theoretical formulation and method.

本誌: 電気学会論文誌A（基礎・材料・共通部門誌） Vol.133 No.7 （2013）

本誌掲載ページ: 387-394 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/133/7/133_387/_article/-char/ja/