Advanced testbeds for quality control of superconductors in power applications

Testbeds for quality measurements on superconducting materials and cables h ave been developed in collaboration between industry and research institute s. The work is focused on the latest generation of BiSrCaCuO (Bi-2223) powd er-in-tube superconductors, which is the only material that is utilized in various demonstrator cable projects around the world. The results of the pr oject are separated into three parts: an in-process critical current testbe d, the development of an ac-loss testbed for single tapes and sc-loss measu rement systems for cables. Based on the design studies and the experimental results that were obtained with these demonstrators, conclusions are drawn and formulated as recommendations for the development of written standards on measuring methods for superconducting materials and cables.