Simulation of AC loss in small HTS coils with iron core

Lingfeng Lai, Chen Gu, Timing Qu, Min Zhang, Yanqing Li, Rui Liu, Tim Coombs, Zhenghe Han

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12 Citations (Scopus)


AC loss is one of the key problems in HTS applications. This study focuses on the AC loss in small Bi-2223/Ag and YBCO coils, with an emphasis on the presence of an iron core. HTS coils with an iron core can be used in a number of applications, including induction heaters, motors, fault current limiters, controllable reactors and transformers. The major concern of the study is the interaction between the iron core and the HTS coil. This study first provides a brief introduction of the resistivity-adaption algorithm (RAA) method, which is used to simulate the field penetration, based on a given flux motion theory. A general model is then proposed, with a discussion on the effect of the iron core. Results showed that a well-designed iron core is beneficial for the AC loss reduction.

Original languageEnglish
Article number6971185
Number of pages5
JournalIEEE Transactions on Applied Superconductivity
Issue number3
Early online date2 Dec 2014
Publication statusPublished - 30 Jun 2015


  • Bi-2223/Ag tapes
  • coil
  • iron core
  • transport current loss
  • YBCO coated conductors

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