Numerical Study on Ramping Loss of an HTS Pancake Coil with Different Co-Wound Materials

In this paper, we introduce an equivalent circuit axisymmetric model to estimate the ramping loss on high-temperature superconducting (HTS) coils with different co-wound materials during the charging process. The ramping loss is the joule loss which is caused by the radial current in HTS coils. It is founded that the material with lower resistivity could produce more radial currents. According to the simulation results, the ramping losses are almost same in quantity. The ramping loss needs to be considered carefully as soon as possible before designing large no-insulation HTS coils or magnets.