Lightning-Induced Magnetic Fields Inside Grid-Like Shields: An Improved Formula Complemented by a Polynomial Chaos Expansion

Naranjo-Villamil, Susana; Guiffaut, Christophe; Gazave, J.; Reineix, Alain

doi:10.1109/temc.2021.3056320

Cited by 5 publications

(3 citation statements)

References 28 publications

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“…A higher magnetic field close to the external vertical edge could be explained by the current displacement phenomenon. It has been observed that when a reinforced concrete building is struck by lightning, the current is not uniformly distributed in the reinforcement, it is diverted to the edges [2], [3], [5].…”

Section: Measurement Resultsmentioning

confidence: 99%

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Measurement of Magnetic Fields Generated by a Lightning Current Flowing Through Reinforced Concrete Walls

Villamil¹,

Gazave²,

Piedallu³

et al. 2022

2022 36th International Conference on Lightning Protection (ICLP)

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Estimating the transient magnetic field generated by a direct lightning strike is essential to protect sensitive electronic devices in industrial facilities. The accuracy of the estimation depends on the approach and the representatives of the model. Out of the different alternatives available in the literature, the full-wave methods are usually the most reliable. Nevertheless, there is still uncertainty in the results because considering all the components of the electromagnetic environment in the models is virtually impossible. To validate the representation of reinforced concrete structures in full-wave simulations, in this paper, we compare the magnetic field measured between two interconnected reinforced concrete walls to the magnetic field computed using CST Studio Suite. Similar tendencies for the distribution of the peak-values are observed; yet, some adjustments may be necessary to reproduce the waveforms.

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Section: Measurement Resultsmentioning

confidence: 99%

“…A good estimation of the electromagnetic fields generated by a direct strike could be obtained using full-wave simulations, see e.g. [1]- [3]. However, the accuracy of the estimations depends on the representatives of the models, and due to our limited knowledge of the phenomenon, we have to make some hypotheses.…”

Section: Introductionmentioning

confidence: 99%

Measurement of Magnetic Fields Generated by a Lightning Current Flowing Through Reinforced Concrete Walls

Villamil¹,

Gazave²,

Piedallu³

et al. 2022

2022 36th International Conference on Lightning Protection (ICLP)

Self Cite

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show abstract

“…Low-frequency magnetic shielding is frequently commonly used to prevent electromagnetic interference in various practical applications, including electric vehicles [1], wireless power transfer [2,3], power converters [4], ultrasensitive atomic sensors [5], resistance spot welding [6], magnetic resonance imaging [7], and power transformers [8]. Depending on specific requirements and working environments, different shielding configurations are selected, such as enclosures [1,9], solid plates [10][11][12][13][14], perforated plates [15][16][17], and wire meshes [18][19][20][21]. Among these, perforated plates offer moderate shielding effectiveness (SE), ventilation capacity, and weight, making them especially suitable for situations where a tradeoff among SE, ventilation, and weight is required.…”

Section: Introductionmentioning

confidence: 99%

Low-frequency Magnetic Shielding of Double-layer Conducting Plates with Periodic Apertures: Experimental Observation of Great Improvement of Shielding Effectiveness by Slightly Separating the Two Plates

Zhou¹,

Wu²,

Gu³

et al. 2023

PIER M

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This article focuses on the low-frequency magnetic shielding of double-layer conducting plates with periodic circular apertures. The shielding effectiveness (SE) is measured as the insertion loss of the plates when they are placed between a pair of coaxial loops, one for magnetic field emission and the other for receiving. Our experimental results show that the SE sharply increases with the layer-to-layer spacing increasing from zero to the aperture diameter. For aluminum plates with 1 mm thickness, 20 mm unit cell, and 10 mm aperture diameter, the enhancement is approximately 10 dB and 20 dB for 3 mm and 9 mm spacing, respectively. In addition, the effect of the lateral deviation on the SE is evident only if the spacing is smaller than the aperture diameter.

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Approximate Analytical Calculation of Magnetic Shielding of Double-Layer Conducting Plates with Periodic Apertures

Huang,

Guo,

Wang

et al. 2024

Lecture Notes in Electrical Engineering

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Lightning-Induced Magnetic Fields Inside Grid-Like Shields: An Improved Formula Complemented by a Polynomial Chaos Expansion

Cited by 5 publications

References 28 publications

Measurement of Magnetic Fields Generated by a Lightning Current Flowing Through Reinforced Concrete Walls

Measurement of Magnetic Fields Generated by a Lightning Current Flowing Through Reinforced Concrete Walls

Low-frequency Magnetic Shielding of Double-layer Conducting Plates with Periodic Apertures: Experimental Observation of Great Improvement of Shielding Effectiveness by Slightly Separating the Two Plates

Approximate Analytical Calculation of Magnetic Shielding of Double-Layer Conducting Plates with Periodic Apertures

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