TY - JOUR
T1 - Parasitic Capacitance Modeling of Copper-Foiled Medium-Voltage Filter Inductors Considering Fringe Electrical Field
AU - Zhao, Hongbo
AU - Huang, Zhizhao
AU - Dalal, Dipen Narendra
AU - Jørgensen, Jannick Kjær
AU - Jørgensen, Asger Bjørn
AU - Wang, Xiongfei
AU - Munk-Nielsen, Stig
N1 - Publisher Copyright:
IEEE
Copyright:
Copyright 2021 Elsevier B.V., All rights reserved.
PY - 2021/7
Y1 - 2021/7
N2 - This article characterizes three parasitic capacitances in copper-foiled medium-voltage inductors. It is found that the conventional modeling method overlooks the effect of the fringe field, which leads to inaccurate modeling of parasitic capacitances in copper-foiled inductors. To address this problem, the parasitic capacitances contributed by the fringe electrical field is identified first, and a physics-based analytical modeling method for the parasitic capacitances contributed by the fringe electrical field is proposed, which avoids using any empirical equations. The total parasitic capacitances are then derived for three different cases with three different core potentials, from which a three-terminal equivalent circuit is derived, and thus, the parasitic capacitances in copper-foiled inductors are explicitly identified. The calculated results show a close agreement with the measured capacitance by using an impedance analyzer. Two recommendations for reducing the parasitic capacitances in copper-foiled inductors are given in this article.
AB - This article characterizes three parasitic capacitances in copper-foiled medium-voltage inductors. It is found that the conventional modeling method overlooks the effect of the fringe field, which leads to inaccurate modeling of parasitic capacitances in copper-foiled inductors. To address this problem, the parasitic capacitances contributed by the fringe electrical field is identified first, and a physics-based analytical modeling method for the parasitic capacitances contributed by the fringe electrical field is proposed, which avoids using any empirical equations. The total parasitic capacitances are then derived for three different cases with three different core potentials, from which a three-terminal equivalent circuit is derived, and thus, the parasitic capacitances in copper-foiled inductors are explicitly identified. The calculated results show a close agreement with the measured capacitance by using an impedance analyzer. Two recommendations for reducing the parasitic capacitances in copper-foiled inductors are given in this article.
KW - Copper-foiled
KW - filter inductor
KW - fringe field
KW - medium-voltage
KW - parasitic capacitance
KW - physics-based modeling
UR - http://www.scopus.com/inward/record.url?scp=85099079687&partnerID=8YFLogxK
U2 - 10.1109/TPEL.2020.3048226
DO - 10.1109/TPEL.2020.3048226
M3 - Journal article
AN - SCOPUS:85099079687
SN - 0885-8993
VL - 36
SP - 8181
EP - 8192
JO - IEEE Transactions on Power Electronics
JF - IEEE Transactions on Power Electronics
IS - 7
M1 - 9311400
ER -