Effect of sample geometry on levitation force in seeded-melt-grown single-domain YBa{sub 2}Cu{sub 3}O{sub x}.

Journal Article · Sun Jun 01 04:00:00 EDT 1997 · IEEE Trans. Appl. Supercond.

DOI:https://doi.org/10.1109/77.620963· OSTI ID:938024

Sagar, S; Lahiri, K; Shi, D; Yang, Z J

Magnetic levitation force is a key factor that influences energy loss in flywheel energy storage applications. Experiments on the relationships between levitation force and YB{sub 2}Cu{sub 3}O{sub x} sample geometry have been conducted. The levitation force has been conducted. The levitation force has been measured for single-domain YB{sub 2}Cu{sub 3}O{sub x} samples with different thicknesses and diameters. It has been found that the thickness dependence agrees well with a current model. However, the measured levitation force that was found only within the linear regime. The levitation force in fact increases as the diameter decreases until a threshold value is reached. As the diameter of HTS sample is reduced smaller than the testing magnet (d=12 mm) the force experiences a rather rapid fall. This behavior can be qualitatively described by a magnetic dipole model based on Meissner currents. Other factors that dominate levitation force are also discussed.

• Research Organization: Argonne National Laboratory (ANL)
• DOE Contract Number: AC02-06CH11357
• OSTI ID: 938024
• Report Number(s): ANL/ET/JA-25732
• Journal Information: IEEE Trans. Appl. Supercond., Journal Name: IEEE Trans. Appl. Supercond. Journal Issue: 2 ; Jun. 1997 Vol. 7
• Country of Publication: United States
• Language: ENGLISH

Related Subjects

25 ENERGY STORAGE
FLYWHEEL ENERGY STORAGE
GEOMETRY
LEVITATION
MAGNETIC DIPOLES
MAGNETS
TESTING
THICKNESS