Title :
A Novel Magnet for AC Loss Measurements on 2G Superconductor Rings and Coils in Axial and Radial Magnetic Fields
Author :
Pamidi, S. ; Kvitkovic, Jozef ; Trociewitz, U. ; Ishmael, S. ; Meinke, R. ; Stelzer, G.
Author_Institution :
Center for Adv. Power Syst., Florida State Univ., Tallahassee, FL, USA
fDate :
6/1/2012 12:00:00 AM
Abstract :
A dual-solenoid magnet system was designed and fabricated for characterizing high temperature superconducting tapes and coils. The magnet coils were made of copper wire and were fabricated using a new winding approach, which enables multi-layer and epoxy-free coils. It was demonstrated that the magnet system provided a uniform AC magnetic field in radial and axial orientations on superconducting rings fabricated from 40 mm wide second generation (2G) high temperature superconducting tape. AC losses were measured on the superconducting rings with variable frequency AC magnetic field applied in both the radial and axial orientations. The versatility of the magnet and the AC loss measurement system is useful for generating the necessary AC loss data for applications such as transformers, inductive fault current limiters, and magnetic shields.
Keywords :
copper; fault current limiters; high-temperature superconductors; magnetic fields; superconducting coils; superconducting magnets; superconducting tapes; superconducting transformers; 2G superconductor coils; 2G superconductor rings; AC loss measurement system; AC loss measurements; AC magnetic field; Cu; axial magnetic fields; dual-solenoid magnet system; epoxy-free coils; high temperature superconducting coils; high temperature superconducting tapes; inductive fault current limiters; magnet coils; magnetic shields; multi-layer coils; radial magnetic fields; size 40 mm; superconducting rings; transformers; Coils; Loss measurement; Magnetic field measurement; Magnetic fields; Magnetic shielding; Nitrogen; Superconducting magnets; AC losses; YBCO coil; copper magnet; magnetic field; ring; superconductivity;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2011.2176460