TY - JOUR
T1 - A Full-Wave PEEC Model of Thin-Wire Structures above the Lossy Ground
AU - Qi, Ruihan
AU - Du, Ya Ping
AU - Chen, Mingli
N1 - Funding Information:
Manuscript received May 2, 2019; revised July 17, 2019 and September 17, 2019; accepted October 20, 2019. Date of publication November 13, 2019; date of current version October 13, 2020. This work was supported by the Research Grants Council of the HKSAR (under Project 15203815E and Project 15210018E). (Corresponding author: Ya Ping Du.) The authors are with the Department of Building Services Engineering, The Hong Kong Polytechnic University, Hong Kong (e-mail: 15901093r@ connect.polyu.hk; [email protected]; [email protected]). Digital Object Identifier 10.1109/TEMC.2019.2949346
Publisher Copyright:
© 1964-2012 IEEE.
Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2020/10
Y1 - 2020/10
N2 - This article addresses a full-wave partial element equivalent circuit (PEEC) model of wire structures above a lossy ground (LSG) for lightning transient analysis. The PEEC model is formulated with dyadic Green's functions. An equivalent circuit is derived for the first time by including correction terms arising from the LSG. Circuit parameters are expressed using Sommerfeld integrals, which can be evaluated numerically and be presented with lookup tables. The low-frequency model of the LSG is derived, and is depicted using the mirror image of source elements, similar to the case of a perfect ground. The comparison of circuit parameters calculated with this model and the Sommerfeld integrals is made. The proposed method is validated numerically with the numerical computation code in the frequency domain, and the finite-difference time-domain (FDTD) method in the time domain. Good agreements are observed. The proposed method is then applied to analyze lightning transients in a wire structure over the LSG. It is concluded that the LSG can be substituted with the low-frequency model for transient analysis. The computational burden in the time-domain simulation can be significantly relieved.
AB - This article addresses a full-wave partial element equivalent circuit (PEEC) model of wire structures above a lossy ground (LSG) for lightning transient analysis. The PEEC model is formulated with dyadic Green's functions. An equivalent circuit is derived for the first time by including correction terms arising from the LSG. Circuit parameters are expressed using Sommerfeld integrals, which can be evaluated numerically and be presented with lookup tables. The low-frequency model of the LSG is derived, and is depicted using the mirror image of source elements, similar to the case of a perfect ground. The comparison of circuit parameters calculated with this model and the Sommerfeld integrals is made. The proposed method is validated numerically with the numerical computation code in the frequency domain, and the finite-difference time-domain (FDTD) method in the time domain. Good agreements are observed. The proposed method is then applied to analyze lightning transients in a wire structure over the LSG. It is concluded that the LSG can be substituted with the low-frequency model for transient analysis. The computational burden in the time-domain simulation can be significantly relieved.
KW - Green's function
KW - lightning
KW - lossy ground (LSG)
KW - partial element equivalent circuit (PEEC)
KW - transient
UR - http://www.scopus.com/inward/record.url?scp=85094202597&partnerID=8YFLogxK
U2 - 10.1109/TEMC.2019.2949346
DO - 10.1109/TEMC.2019.2949346
M3 - Journal article
AN - SCOPUS:85094202597
SN - 0018-9375
VL - 62
SP - 2055
EP - 2064
JO - IEEE Transactions on Electromagnetic Compatibility
JF - IEEE Transactions on Electromagnetic Compatibility
IS - 5
M1 - 8897726
ER -