Accession Number:

ADA561049

Title:

AC Losses in a YBa2Cu3O7-x Coil (Postprint)

Descriptive Note:

Journal article

Corporate Author:

AIR FORCE RESEARCH LAB WRIGHT-PATTERSON AFB OH PROPULSION DIR/POWER DIV/MECHANICAL ENERGY CONVERSION BRANCH

Personal Author(s):

• Polak, M.
• Demencik, E.
• Jansak, L.
• Usak, E.
• Mozola, P.
• Aized, D.
• Thieme, C. L.
• Levin, G. A.
• Barnes, P. N.

Report Date:

2012-02-01

Pagination or Media Count:

5.0

Abstract:

The properties of a small pancake coil made with a 10 mm wide copper-stabilized YBa2Cu3O7-x YBCO-coated conductor were investigated. The radial component of the magnetic field was mapped at the coil edge in both the dc and ac regimes and differs significantly from that calculated assuming a uniform current distribution. The observed hysteresis indicates the strong influence of the ferromagnetic properties of the substrate. The ac losses of the coil were measured for ac frequencies between 60 and 1000 Hz. The differences in properties of the YBCO coil and a similarly prepared copper coil are discussed.

Descriptors:

• *YTTRIUM BARIUM COPPER OXIDES
• ALTERNATING CURRENT
• COILS
• FERROMAGNETIC MATERIALS
• FREQUENCY
• HYSTERESIS
• MAGNETIC FIELDS
• REPRINTS
• SUPERCONDUCTORS

Subject Categories:

• Electricity and Magnetism

Distribution Statement:

APPROVED FOR PUBLIC RELEASE