Title :
Test results of the small model coil for a small-sized superconducting magnetic energy storage device
Author :
Ryu, K. ; Kim, H.J. ; Seong, K.C. ; Cho, J.W. ; Lee, E.Y. ; Jin, H.B. ; Ryu, K.S.
Author_Institution :
Dept. of Electr. Eng., Chonnam Nat. Univ., Kwangju, South Korea
fDate :
9/1/1999 12:00:00 AM
Abstract :
For the development of the 0.7 MJ small-sized superconducting magnetic energy storage (μSMES) device, we fabricated and tested the small model coil which had parameters similar to those of the optimally designed 0.7 MJ μSMES device, except for stored energy and device size. The inductance and field measurements indicate that the developed code is applicable to the design of the μSMES devices. The quench test results showed that the highly prestressed model coil had an excellent dc performance in spite of a dry type coil but the quench current decreased to 87% of the coil´s critical current even at the field rate of 0.45 T/s. The quench propagation velocities for a kA class superconductor with a NbTi/CuNi/Cu ratio of 1/1/5 ranging from 0.6 m/s to 6 m/s for various operating currents at 4 T
Keywords :
critical currents; inductance; superconducting coils; superconducting device testing; superconducting magnet energy storage; μSMES; 0.6 to 6 m/s; 0.7 MJ; 4 T; NbTi-CuNi-Cu; NbTi/CuNi/Cu ratio; critical current; dc performance; dry type coil; field measurements; inductance; operating current; prestressed model coil; quench current; quench propagation velocities; quench test; small model coil; small-sized SMES; stored energy; superconducting magnetic energy storage device; test results; Conductors; Critical current; Energy storage; Magnetic field measurement; Magnetic separation; Samarium; Superconducting coils; Superconducting magnetic energy storage; Testing; Wire;
Journal_Title :
Magnetics, IEEE Transactions on
