Effect of base magnetism to ac losses on multi-layer Htsc power transmission cables designed with second generation coated conductors

Superconducting power transmission cable is a structure created by arranging or wrapping superconducting tapes in different ways. The main factors affecting current transmission capacity are: size and number of tapes, their geometrical arrangement in the cross-section of the conductors, electronic and magnetic properties of coating material, wrapping angle, etc. In the cable manufacturing process, to increase current carrying capacity and so to lessen the loss, trying and testing different arrangement of superconducting wire inside cables is very important. However, the testing causes very large of time and money consuming. Performing most efficient (low alternative current (ac) loss) electromagnetic design and to be able to find out loss mechanism the flux and current penetration into superconducting wire and cable should correctly be understood both before production stage and after testing. In this project, using a commercial finite element software a new method will be developed that will simulate flux and current penetration into two layer cables produced from second generation coated conductors and calculate the loss. Developed method to implement to power transmission cables will be easier than the methods used currently and also intended to further shorten the calculation time. This thesis was applied for the loss calculation of cables, which was developed in previous studies, constituted with ferromagnetic coated lines in terms of flux, current and alternative current. This thesis was supported by TUBİTAK project number: 110T876 Keywords: Superconductor, ferromagnetic substance, Power Transmission Cable