  The development of the high-temperature superconductors (HTS) conductors has
allowed the development of diverse superconductor devices. Some of these
devises, like the power generators and high-field magnets, are classified as
large-scale HTS systems, because they are made of hundreds or thousands of
turns. Mathematical models are required to address the analysis of these kind
of systems. This task cannot be done by means of analytical models, because
they are limited to the analysis of simple assemblies. The finite-element
models using the H formulation have been extensively used during the last
years. Nevertheless, the use of H formulation models to analyze large-scale
systems is hindered by the excessive computational load. The recently proposed
T-A formulation models have allowed building more efficient models for systems
made of HTS tapes. Additionally, the homogenization and multi-scaling methods
have been successfully applied in conjunction with the H and T-A formulations,
these simplification methods allows reducing the required computational
resources. In this article a new simplification method, called densification,
is proposed. The strategies emerging from the combined use of the formulations
and the simplification methods already mentioned are extensively explored, and
the comprehensive validation and comparison of all the resulting strategies is
presented.
