3D modeling of stack-type superconducting magnetic bearings

In this work, we developed an open-source software coded in C++ to analyze the performance of a stack-type SMB, and verified our modeling results through comparison with measurements in field cooling and zero field cooling modes at different temperatures, from 77 K to 59 K. Contrary to previously presented models, we used the Jc(B,θ) measurement data to describe the characteristics of the HTS tapes in the stacks. This eliminates the need of artificially calibrating the model using the maximum levitation force to obtain the hysteresis force graph. However, this requires some considerations in using Jc(B,θ) measurement data and implementing it to the model.