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The emergence of second generation (2G) high-temperature superconductor (HTS)tapes has favored the development of HTS magnets for their applications inareas such as NMR, MRI and high field magnets. The screening current-inducedfield and the field drift are two major problems hindering the use of HTS tapesin the mentioned areas. Both problems are caused by the screening current, thenit is necessary to have a modeling strategy capable to estimate such phenomena.Thus far, the H formulation has been the most successful and used approach tomodel medium-size systems (hundreds of tapes). However, its application tolarge-scale systems is still impaired by excessive computation times and memoryrequirements. Homogenization and multi-scaling strategies have beensuccessfully implemented to increase the computational efficiency. In thiscontribution, we show that using the homogenization technique with the recentlydeveloped T-A formulation allows reducing the computation time and the amountof memory up to the point that real-time simulations of slow ramping cycles oflarge-scale systems are possible. The T-A homogeneous model also allowssystematically investigating the screening current using numerical simulations.

Screening Current-Induced Field and Field Drift Study in HTS coils using T-A homogenous model