Calculation of AC losses in large HTS stacks and coils

Victor Zermeno, Asger Bech Abrahamsen, Nenad Mijatovic, Bogi Bech Jensen, Mads Peter Sørensen

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

272 Downloads (Pure)

Abstract

In this work, we present a homogenization method to model a stack of HTS tapes under AC applied transport current or magnetic field. The idea is to find an anisotropic bulk equivalent for the stack of tapes, where the internal alternating structures of insulating, metallic, superconducting and substrate layers are reduced while keeping the overall electromagnetic behavior. Our work extends the anisotropic bulk model originally presented by Clem et al. and later refined by Prigozhin and Sokolovsky. We disregard assumptions upon the shape of the critical region and use a power law E-J relationship allowing for overcritical current densities to be considered. The method presented here allowed for a computational speedup factor of up to 2 orders of magnitude when compared to full 2-D simulations taking into account the actual structure of the stacks without compromising accuracy.
Original languageEnglish
Title of host publicationProceedings of International Conference on Coated Conductors for Applications (CCA2012)
Number of pages2
Publication date2012
Publication statusPublished - 2012
Event International Conference on Coated Conductors for Applications (CCA 2012) - Heidelberg, Germany
Duration: 13 Nov 201216 Nov 2012

Conference

Conference International Conference on Coated Conductors for Applications (CCA 2012)
CountryGermany
CityHeidelberg
Period13/11/201216/11/2012

Bibliographical note

International Conference on Coated Conductors for Applications (CCA2012), Heidelberg, Germany, November 2012.

Keywords

  • Finite-element modeling
  • AC losses
  • coils
  • homogenization

Cite this

Zermeno, V., Abrahamsen, A. B., Mijatovic, N., Jensen, B. B., & Sørensen, M. P. (2012). Calculation of AC losses in large HTS stacks and coils. In Proceedings of International Conference on Coated Conductors for Applications (CCA2012)
Zermeno, Victor ; Abrahamsen, Asger Bech ; Mijatovic, Nenad ; Jensen, Bogi Bech ; Sørensen, Mads Peter. / Calculation of AC losses in large HTS stacks and coils. Proceedings of International Conference on Coated Conductors for Applications (CCA2012). 2012.
@inproceedings{cd4fb15c70c74106a3d68b79be51d27f,
title = "Calculation of AC losses in large HTS stacks and coils",
abstract = "In this work, we present a homogenization method to model a stack of HTS tapes under AC applied transport current or magnetic field. The idea is to find an anisotropic bulk equivalent for the stack of tapes, where the internal alternating structures of insulating, metallic, superconducting and substrate layers are reduced while keeping the overall electromagnetic behavior. Our work extends the anisotropic bulk model originally presented by Clem et al. and later refined by Prigozhin and Sokolovsky. We disregard assumptions upon the shape of the critical region and use a power law E-J relationship allowing for overcritical current densities to be considered. The method presented here allowed for a computational speedup factor of up to 2 orders of magnitude when compared to full 2-D simulations taking into account the actual structure of the stacks without compromising accuracy.",
keywords = "Finite-element modeling, AC losses, coils, homogenization",
author = "Victor Zermeno and Abrahamsen, {Asger Bech} and Nenad Mijatovic and Jensen, {Bogi Bech} and S{\o}rensen, {Mads Peter}",
note = "International Conference on Coated Conductors for Applications (CCA2012), Heidelberg, Germany, November 2012.",
year = "2012",
language = "English",
booktitle = "Proceedings of International Conference on Coated Conductors for Applications (CCA2012)",

}

Zermeno, V, Abrahamsen, AB, Mijatovic, N, Jensen, BB & Sørensen, MP 2012, Calculation of AC losses in large HTS stacks and coils. in Proceedings of International Conference on Coated Conductors for Applications (CCA2012). International Conference on Coated Conductors for Applications (CCA 2012), Heidelberg, Germany, 13/11/2012.

Calculation of AC losses in large HTS stacks and coils. / Zermeno, Victor; Abrahamsen, Asger Bech; Mijatovic, Nenad; Jensen, Bogi Bech; Sørensen, Mads Peter.

Proceedings of International Conference on Coated Conductors for Applications (CCA2012). 2012.

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

TY - GEN

T1 - Calculation of AC losses in large HTS stacks and coils

AU - Zermeno, Victor

AU - Abrahamsen, Asger Bech

AU - Mijatovic, Nenad

AU - Jensen, Bogi Bech

AU - Sørensen, Mads Peter

N1 - International Conference on Coated Conductors for Applications (CCA2012), Heidelberg, Germany, November 2012.

PY - 2012

Y1 - 2012

N2 - In this work, we present a homogenization method to model a stack of HTS tapes under AC applied transport current or magnetic field. The idea is to find an anisotropic bulk equivalent for the stack of tapes, where the internal alternating structures of insulating, metallic, superconducting and substrate layers are reduced while keeping the overall electromagnetic behavior. Our work extends the anisotropic bulk model originally presented by Clem et al. and later refined by Prigozhin and Sokolovsky. We disregard assumptions upon the shape of the critical region and use a power law E-J relationship allowing for overcritical current densities to be considered. The method presented here allowed for a computational speedup factor of up to 2 orders of magnitude when compared to full 2-D simulations taking into account the actual structure of the stacks without compromising accuracy.

AB - In this work, we present a homogenization method to model a stack of HTS tapes under AC applied transport current or magnetic field. The idea is to find an anisotropic bulk equivalent for the stack of tapes, where the internal alternating structures of insulating, metallic, superconducting and substrate layers are reduced while keeping the overall electromagnetic behavior. Our work extends the anisotropic bulk model originally presented by Clem et al. and later refined by Prigozhin and Sokolovsky. We disregard assumptions upon the shape of the critical region and use a power law E-J relationship allowing for overcritical current densities to be considered. The method presented here allowed for a computational speedup factor of up to 2 orders of magnitude when compared to full 2-D simulations taking into account the actual structure of the stacks without compromising accuracy.

KW - Finite-element modeling

KW - AC losses

KW - coils

KW - homogenization

M3 - Article in proceedings

BT - Proceedings of International Conference on Coated Conductors for Applications (CCA2012)

ER -

Zermeno V, Abrahamsen AB, Mijatovic N, Jensen BB, Sørensen MP. Calculation of AC losses in large HTS stacks and coils. In Proceedings of International Conference on Coated Conductors for Applications (CCA2012). 2012