Conveners
M2Po2D - HTS Cables - Fabrication and Characterization
- Alexander Otto (Solid Material Solutions, LLC)
- Sonja Schlachter (Karlsruhe Institute of Technology)
The HTS current leads for the ITER project will be the largest ever operated, with unprecedented currents, up to 68 kA and voltages, up to 14 kV. According to the ITER agreement these leads will be provided in-kind by the PR of China. After an extensive development program at the Hefei Institute of Plasma Physics (ASIPP) and with the support of the ITER HTS working group, the ITER current...
$RE-Ba_2Cu_3O_{7−δ}$ (REBCO, RE = rare earth) coated conductors maintain high current densities in the presence of large magnetic fields, making REBCO a promising conductor for use in high magnetic field applications. Unfortunately, the manufacturing process produces defects, resulting in significant drops in the critical current, $I_c$, along the length of the conductor. Additional variations...
Second generation high temperature superconducting (HTS) tapes have been widely employed in design and development of Superconducting Fault Current Limiters (SFCL) and Superconducting Magnetic Energy Storage (SMES) systems. These systems are generally operated near the critical currents of the coated conductors to get the maximum outcomes thus there will be situations when the hot spots may...
Dielectric insulation systems pose a design and material selection challenges for high temperature superconducting (HTS) power cables. Cryogenic operating conditions cause mechanical stresses and the resulting cracks and voids degrade the performance of electrical insulation systems. Superconducting power cable designs that do not use solid insulation are attractive for low and medium voltage...
We reported previously the ac loss measurements of a CORC wire, which consisted of six 2 mm-wide coated conductors wound into three layers around a copper core. The critical current at the self field and 77 K of each coated conductor was 68 A. In order to compare with these experimental results, we carried out numerical electromagnetic field analyses. Our numerical model was formulated with...
The thermal and electrical contact resistance of 10 stacks of YBCO coated conductor tapes was measured at 77 K. The ten stacks were conduction cooled, and had no insulation or other preparation between the layers. The stack of ReBCO comprised of ten pieces of superconducting tape each 30 cm long. To generate pressure on the stack of ReBCO tapes massive steel plates were used. The force of a...
