HTS COILS FOR THE NAVY SUPERCONDUCTING HOMOPOLAR MOTOR GENERATOR/

We report here on the development of HTS coils at Intermagnetics for t he Navy's homopolar motor / generator program. Two coil sizes were use d. A series of small test coils (14.0 cm i.d. x 15.0 cm o.d. x 1.4 cm long) were employed to evaluate various conductor winding, insulation and epoxy impregnation issues. Based upon the results of these test co ils, the larger coil modules (19.37 cm i.d. x 24.45 cm o.d. x 2.54 cm long) for the homopolar motor / generator were fabricated. Several coi ls each of three types of react-and-wind coils were produced, one type with monocore BSCCO-2223, one type with multifilamentary BSSCO-2223 a nd the other type with surface coated BSCCO-2212. Test results are pre sented as well as discussions on various coil technology issues.