Universiti Teknologi Malaysia Institutional Repository

Effects of return stroke parameters and soil water content on EMF characteristics

Mousa, Mohammed I. and Abdul Malek, Zulkurnain and M. Esa, Mona Riza (2019) Effects of return stroke parameters and soil water content on EMF characteristics. Applied Computational Electromagnetics Society Journal, 34 (8). pp. 1219-1225. ISSN 1054-4887

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Abstract

Electromagnetic pulses produced by lightning return strokes travel long distances both aboveground and underground. This study investigated the effects of return stroke parameters on electromagnetic propagation over lossy ground. The lightning return stroke channel was modeled using the Modified Transmission Line with Exponential Decay (MTLE) model. Electromagnetics was modeled using a frequency domain solver in the form of finite element analysis via COMSOL software. The studied stroke current parameters were peak, rise time, and decay time. In addition, the effects of soil water content was studied. Aboveground and underground electric and magnetic fields followed and were directly affected by the lightning current waveshape. The underground fields were affected by soil water content. In contrast, the aboveground fields are not affected by water content except for the radial electric field.

Item Type:Article
Uncontrolled Keywords:Current parameters, Water content
Subjects:T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions:Electrical Engineering
ID Code:87390
Deposited By: Widya Wahid
Deposited On:08 Nov 2020 11:55
Last Modified:08 Nov 2020 11:55

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