Abstract
Recent advances in conductor development have enabled short lengths of Ag/BSCCO tape to carry current in excess of 6.5×104 A/cm2 at 2T and 20K. While prereacted long lengths of conductor are not yet able to provide this high current density, hundreds of meters have been successfully wound in high performance coils for generators. A one megawatt superconducting generator can be easily and cheaply fabricated by replicating existing high purity aluminum coils with Ag/BSCCO tape coils in a 1MW generator which has already been successfully tested with liquid hydrogen cooling at 21K. Progress toward achieving a 72,000 Ampere-turn coil (which is typical for the 1MW generator) wound with prereacted Ag/BSCCO tape is reported. Implications of utilizing high temperature superconductors and cryocoolers for the armature windings which have high AC losses are discussed.
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Oberly, C.E., Joshi, C., Rodenbush, A.J., Young, S.J., Long, L.J., Kozlowski, G. (1994). Progress Toward Megawatt Class Superconducting Generators which Operate at Greater than 20 Kelvin. In: Kittel, P. (eds) Advances in Cryogenic Engineering. Advances in Cryogenic Engineering, vol 39. Springer, Boston, MA. https://doi.org/10.1007/978-1-4615-2522-6_115
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