Patent ID: 7355307
Filing Date: 2008-04-08
Classification: H02K,Y02E

Abstract:
1. A device for supplying electric energy to at least one superconductor having a rotating region having a cooled region cooled to at least one predetermined temperature for achieving superconductivity, and a non-rotating region, said device comprising: at least one electric energy source in an uncooled region of the superconductor; a first transformer and a second transformer, each transformer having a primary winding and a secondary winding for transferring electric energy between the at least one energy source and the superconductor, wherein the primary winding of the first transformer is electrically connected with the energy source in the uncooled region, and the secondary winding of the second transformer is electrically connected with the superconductor in the rotating region; wherein the secondary winding of the first transformer is in the uncooled region and the primary winding of the second transformer is in the cooled region; and wherein the primary winding of the first transformer is located in the non-rotating region and the secondary winding of the first transformer is located in the rotating region.