Patent ID: 6324851
Filing Date: 2001-12-04
Classification: H01F,Y02E

Abstract:
A cryostat for a superconducting transformer, the transformer having a core with a plurality of limbs and a superconducting coil set disposed around each limb, each of the coil sets transforming current at a distinct phase, the cryostat comprising:a non-gas permeable outer shell and an electrically non-conducting internal liner disposed within the outer shell, wherein the internal liner and the outer shell define a tank for containing a cryogenic coolant and for containing the coil sets, a plurality of electrical components, and a plurality of internal electrical connections of the transformer;an insulation layer for substantially thermally isolating the internal liner from the outer shell, the insulation layer being disposed between the outer shell and the internal liner; anda first plurality of tubes extending through a first and a second end of the tank, each of the tubes having coil sets wound therearound, wherein the limbs of the core pass through the tubes so that the coil sets encompass the limbs.