Braid Shielding Effectiveness Kron’s Model via Coupled Cables Configuration

Cholachue, Christel; Ravelo, Blaise; Simoens, A.; Fathallah, A.; Veronneau, M.; Maurice, Olivier

doi:10.1109/tcsii.2019.2939846

Cited by 4 publications

(4 citation statements)

References 14 publications

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“…However, note that the presence of the kinetic inductance not only affects the speed of propagation but also the impedance of the transmission line. This can affect both the shielding effectiveness of the cables and the microstrip interconnected signal propagation [10,11]. These effects can be studied using numerical procedures such as FDTD or FETD.…”

Section: Discussionmentioning

confidence: 99%

The Upper Bound of the Speed of Propagation of Waves Along a Transmission Line

Cooray¹,

Cooray²,

Rachidi³

et al. 2020

PIER M

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According to theory, once certain conditions are fulfilled, current and voltage pulses propagate along ideal transmission lines with the speed of light. One can reach such a conclusion only when the conductors are assumed to be perfectly conducting, which cannot be realized in practice. A wave can only propagate along a transmission line with the speed of light if no energy has to be spent in establishing the current in the conductor. However, in establishing a current in a transmission line, energy has to be supplied to the electrons to set them in motion since they have a mass. The energy transfer to the electrons manifests itself in the form of an inductance which is called the kinetic inductance. The effect of the kinetic inductance has to be taken into account in signal propagation along high carrier mobility conductors including super conductors. In the case of transmission lines, the kinetic inductance leads to a change in the characteristic impedance and a reduction in the speed of propagation of waves along the transmission line. The goal of this paper is to show that the kinetic inductance will set an upper bound to the speed of propagation of waves along transmission lines, which is smaller than the speed of light.

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Section: Discussionmentioning

confidence: 99%

The Upper Bound of the Speed of Propagation of Waves Along a Transmission Line

Cooray¹,

Cooray²,

Rachidi³

et al. 2020

PIER M

View full text Add to dashboard Cite

show abstract

“…Prior to using shielding materials to reduce the magnetic field intensity in the shielding region, the current source was wrapped with a shielding pipe [27], [28]. Under this condition, the incident magnetic field intensity at Interface 1 changes.…”

Section: Shielding Pipementioning

confidence: 99%

Analytical Shielding Metrics-Based Shielding Configuration Guideline for ELF Magnetic Field Mitigation

Kim¹,

Kim

Park

2022

IEEE Access

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This paper presents a simple guideline for configuration of the shielding materials that mitigates the extremely low-frequency (ELF) magnetic fields generated by power facilities located close to our daily life activities. Generally, materials with high permeability and conductivity are used to mitigate the magnetic field; however, in the current source region, before passing through the shielding material, the magnetic field may be increased by the configuration of the shielding material. To assess the effect of the shielding configuration in the current source and shielding regions, metrics are newly introduced, which were obtained based on the analytical solution for infinite width shields. In addition, the analytical solution of the shielding pipe wrapping a current source was deduced by solving the cylindrical Helmholtz equation. The shielding pipe is an important factor that can bring about changes in the metrics introduced in this study. The simple shielding guidelines suggested from these analyses help determine strategies for designing shields that can mitigate the magnetic field in both the current source and shielding regions. INDEX TERMSExtremely low frequency magnetic field, Magnetic field mitigation, Magnetic field shielding, Power facilities

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“…In addition, various problems of harm to the human body may result from electromagnetic fields, such as trade barriers or lawsuits with consumers owing to inter-country regulations in the future. For this reason, studies on electromagnetic shielding are being conducted to reduce or block the electromagnetic field [ 7 , 8 ]. Studies on the EMC of EV charging using wireless power transfer have been studied in various environments [ 9 , 10 , 11 , 12 ], however, only a few research studies about the plug-in charging method exist [ 13 , 14 ].…”

Section: Introductionmentioning

confidence: 99%

Assessment of the Electromagnetic Radiation Exposure at EV Charging Facilities

Bae

Park

2022

Sensors

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As the number of electric vehicles (EV) increases, the number of EV chargers also increases. Charging infrastructure will be built into our close environment. Because of this, the assessment of the electromagnetic field exposure generated from the charger is an important issue. This paper valuates the electromagnetic field exposure of six EV chargers. To assess the level of exposure of EV chargers, the electromagnetic fields from six chargers were measured and analyzed. In addition, measured electromagnetic field exposure levels were evaluated against ICNIRP guidelines. Higher electromagnetic fields were measured with standard chargers than with fast chargers. For the fast charger in the charging state, the magnetic field increased with the charging current. Electromagnetic field exposures for all six chargers did not exceed standard limits. The results of the assessment of the electromagnetic field exposure of the six EV chargers will contribute to the establishment of standards for the evaluation of the electromagnetic field exposure of the EV chargers in the future.

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Braid Shielding Effectiveness Kron’s Model via Coupled Cables Configuration

Cited by 4 publications

References 14 publications

The Upper Bound of the Speed of Propagation of Waves Along a Transmission Line

The Upper Bound of the Speed of Propagation of Waves Along a Transmission Line

Analytical Shielding Metrics-Based Shielding Configuration Guideline for ELF Magnetic Field Mitigation

Assessment of the Electromagnetic Radiation Exposure at EV Charging Facilities

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