Open AccessElectromagnetic modelling using T‐A formulation for high‐temperature superconductor (RE)Ba 2 Cu 3 O x high field magnets
Author(s) -
Wang Yawei,
Bai Hongyu,
Li Jianwei,
Zhang Min,
Yuan Weijia
Publication year - 2020
Publication title -
high voltage
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.732
H-Index - 20
ISSN - 2397-7264
DOI - 10.1049/hve.2019.0120
Subject(s) - high temperature superconductivity , magnet , materials science , superconductivity , condensed matter physics , field (mathematics) , analytical chemistry (journal) , physics , electrical engineering , chemistry , engineering , mathematics , pure mathematics , chromatography
Second generation (2G) high‐temperature superconductor (HTS) (RE)Ba 2 Cu 3 O x (REBCO) shows a great potential in building high field magnets beyond 23.5 T. The electromagnetic modelling is vital for the design of HTS magnet, however, this always suffers the challenge of huge computation for high field magnets with large number of turns. This study presents a novel electromagnetic modelling based on T‐A formulation for REBCO magnets with thousands of turns. An equivalent turn method is proposed to reduce the number of turns in calculation, so that the computation cost can be reduced significantly, and meanwhile the key electromagnetic behaviour of HTS magnet can be simulated with enough accuracy. The ramping operation of a fully HTS magnet with 12,000 turns are analysed using both the original T‐A model with actual turns and improved T‐A model with equivalent turns. The two models show a good agreement on the key electromagnetic behaviours of the magnet: distribution of current density, magnetic fields, screen current induced field and magnetisation loss, so that this improved T‐A model using equivalent turns is validated. The T‐A modelling of REBCO magnet is a powerful tool for the electromagnetic analysis of industry‐scale high field magnets.