Calculation of AC losses in large HTS stacks and coils

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedings – Annual report year: 2012Researchpeer-review


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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 International Conference on Coated Conductors for Applications (CCA 2012)

Bibliographical note

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

    Research areas

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