Title :
High-temperature superconducting current leads for micro-SMES application
Author :
Niemann, R.C. ; Cha, Y.S. ; Hull, J.R. ; Buckles, W.E. ; Daugherty, M.A. ; Weber, B.R.
Author_Institution :
Argonne Nat. Lab., IL, USA
fDate :
7/1/1994 12:00:00 AM
Abstract :
SMES is being applied on a microscale (1-10 MJ stored energy) to improve electrical power quality. A major portion of the SMES refrigeration load is for cooling conventional (copper, vapor-cooled) current leads that transfer energy between the magnet and the power-conditioning equipment. The lead refrigeration load can be reduced significantly by the use of high-temperature superconductors (HTSs). An HTS current lead suitable for micro-SMES application has been designed. The lower stage of the lead employs HTSs. A transition between the lower stage and the conventional upper-stage lead is heat-intercepted by a cryocooler. Details of the design are presented. Construction and operating experiences are discussed
Keywords :
cryogenics; high-temperature superconductors; power supply quality; refrigeration; superconducting cables; superconducting magnet energy storage; 1 to 10 MJ; Cu; Cu current leads; SMES refrigeration load; cooling; cryocooler; electrical power quality; high temperature superconductor current leads; micro-SMES application; operating experiences; power-conditioning equipment; superconducting magnet energy storage; vapor-cooled current leads; Copper; Geometry; Helium; High temperature superconductors; Laboratories; Power quality; Refrigeration; Samarium; Superconducting magnetic energy storage; Superconductivity;
Journal_Title :
Magnetics, IEEE Transactions on
