First Principles Model of Electric Cable Braid Penetration with Dielectrics

Campione, Salvatore; Warne, Larry Kevin; Langston, William L.; Basilio, Lorena I.

doi:10.2528/pierc17103010

Title: First Principles Model of Electric Cable Braid Penetration with Dielectrics

Abstract

In this study, we report the formulation to account for dielectrics in a first principles multipole-based cable braid electromagnetic penetration model. To validate our first principles model, we consider a one-dimensional array of wires, which can be modeled analytically with a multipole-conformal mapping expansion for the wire charges; however, the first principles model can be readily applied to realistic cable geometries. We compare the elastance (i.e. the inverse of the capacitance) results from the first principles cable braid electromagnetic penetration model to those obtained using the analytical model. The results are found in good agreement up to a radius to half spacing ratio of 0.5-0.6, depending on the permittivity of the dielectric used, within the characteristics of many commercial cables. We observe that for typical relative permittivities encountered in braided cables, the transfer elastance values are essentially the same as those of free space; the self-elastance values are also approximated by the free space solution as long as the dielectric discontinuity is taken into account for the planar mode.

Authors:

Campione, Salvatore ^[1]; Warne, Larry Kevin ^[1]; Langston, William L. ^[1]; Basilio, Lorena I. ^[1]

Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

Publication Date:: Mon Jan 01 00:00:00 EST 2018

Research Org.:: Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

Sponsoring Org.:: USDOE National Nuclear Security Administration (NNSA)

OSTI Identifier:: 1457365

Report Number(s):: SAND-2018-0824J
Journal ID: ISSN 1937-8718; 660395

Grant/Contract Number:: AC04-94AL85000

Resource Type:: Accepted Manuscript

Journal Name:: Progress in Electromagnetics Research C

Additional Journal Information:: Journal Volume: 82; Journal ID: ISSN 1937-8718

Publisher:: EMW Publishing

Country of Publication:: United States

Language:: English

Subject:: 42 ENGINEERING; electric penetration; dielectrics; first principles electromagnetic penetration model; cable braid

Citation Formats


                    Campione, Salvatore, Warne, Larry Kevin, Langston, William L., and Basilio, Lorena I. First Principles Model of Electric Cable Braid Penetration with Dielectrics.  United States: N. p., 2018. 
Web.  doi:10.2528/pierc17103010.

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                    Campione, Salvatore, Warne, Larry Kevin, Langston, William L., & Basilio, Lorena I. First Principles Model of Electric Cable Braid Penetration with Dielectrics.  United States.  https://doi.org/10.2528/pierc17103010

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                    Campione, Salvatore, Warne, Larry Kevin, Langston, William L., and Basilio, Lorena I. Mon .  
"First Principles Model of Electric Cable Braid Penetration with Dielectrics".  United States.  https://doi.org/10.2528/pierc17103010.  https://www.osti.gov/servlets/purl/1457365.

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@article{osti_1457365,

  title        = {First Principles Model of Electric Cable Braid Penetration with Dielectrics},

  author       = {Campione, Salvatore and Warne, Larry Kevin and Langston, William L. and Basilio, Lorena I.},

  abstractNote = {In this study, we report the formulation to account for dielectrics in a first principles multipole-based cable braid electromagnetic penetration model. To validate our first principles model, we consider a one-dimensional array of wires, which can be modeled analytically with a multipole-conformal mapping expansion for the wire charges; however, the first principles model can be readily applied to realistic cable geometries. We compare the elastance (i.e. the inverse of the capacitance) results from the first principles cable braid electromagnetic penetration model to those obtained using the analytical model. The results are found in good agreement up to a radius to half spacing ratio of 0.5-0.6, depending on the permittivity of the dielectric used, within the characteristics of many commercial cables. We observe that for typical relative permittivities encountered in braided cables, the transfer elastance values are essentially the same as those of free space; the self-elastance values are also approximated by the free space solution as long as the dielectric discontinuity is taken into account for the planar mode.},

  doi          = {10.2528/pierc17103010},

  journal      = {Progress in Electromagnetics Research C},

  number       = ,

  volume       = 82,

  place        = {United States},

  year         = {Mon Jan 01 00:00:00 EST 2018},

  month        = {Mon Jan 01 00:00:00 EST 2018}

}

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Figures / Tables:

Fig. 1.: Dielectric materials surround the planar braid layer: (a) excitation from below and (b) excitation from above. Φ_ci, and Φ_ce, represent the internal and external potentials in the shadow side of the structure, respectively. Φ_bi, and Φ_be, represent the internal and external potentials in the illuminated side of themore »

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