We report here on the development of HTS coils at Intermagnetics for the Navy's homopolar motor / generator program. Two coil sizes were used. A series of small test coils (14.0 cm i.d. x 15.0 cm 0.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 coils, the larger coil modules (19.37 cm i.d. x 24.45 cm 0.d. x 2.54 cm long) for the homopolar motor / generator were fabricated. Several coils each of three types of react-and-wind coils were produced, one type with monocore BSCCO-2223, one type with multifilamentary BSSCO-2223 and the other type with surface coated BSCCO-2212. Test results are presented as well as discussions on various coil technology issues.
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