Cryogenic design of a 800 kJ HTS SMES

Abstract

In the context of a DGA (Délégation Générale pour l'Armement) project, we have designed a 800 kJ SMES. The conductor is made with 3 or 4 Bi-2212 PIT tapes insulated and assembled by Nexans France. The operating temperature is 20 K. The cryogenic design of the SMES is presented. The thermal operation model was calculated using FLUX®, a F.E.M. (Finite Element Model) software. We present the results of the measurements of thermal and electrical resistances and the results of the tests on a small-scale double pancake coil.