%0 Journal Article
%J Physical Review B
%D 2008
%T Field and current distributions and ac losses in a bifilar stack of superconducting strips
%A Clem, J. R.
%K ARRAYS
%K CONDUCTOR
%K CRITICAL-STATE
%K FAULT CURRENT LIMITERS
%K II-SUPERCONDUCTOR
%K PERPENDICULAR MAGNETIC-FIELD
%K TRANSPORT CURRENTS
%K YBCO-COATED
%M ISI:000255457200110
%P 134506
%R 10.1103/PhysRevB.77.134506
%V 77
%X In this paper, I first analytically calculate the magnetic-field and sheet-current distributions generated in an infinite stack of thin superconducting strips of thickness d, width 2a >> d, and arbitrary separation D when adjacent strips carry net current of magnitude I in opposite directions. Each strip is assumed to have uniform critical current density J(c), critical sheet-current density K-c=J(c)d, and critical current I-c=2aK(c), and the distribution of the current density within each strip is assumed to obey critical-state theory. I then derive expressions for the ac losses due to magnetic-flux penetration both from the strip edges and from the top and bottom of each strip and I express the results in terms of integrals involving the perpendicular and parallel components of the magnetic field. After numerically evaluating the ac losses for typical dimensions, I present analytic expressions from which the losses can be estimated.
%8 Apr
%9 Article
%@ 1098-0121