Analysis of Transformer Type Superconducting Fault Current Limiters

The inductive type SFCLs and the transformer type SFCLs need the iron cores. In both, the fault current is transformed from the primary winding to the secondary winding. The difference is in the secondary windings. The superconducting materials for every kind of SFCL should have both high value of resistivity in the resistive state,rho_tau , and high critical current density . The paper shows, that the transformer SFCL can be made using every type of commercial HTS elements. The inductive SFCLs need the HTS materials with very large value of the rho_tauJ_c parameter.