Hysteretic ac loss of polygonally arranged superconducting strips carrying ac transport current

Yasunori Mawatari, Kazuhiro Kajikawa
2008 Applied Physics Letters  
The hysteretic ac loss of a current-carrying conductor in which multiple superconducting strips are polygonally arranged around a cylindrical former is theoretically investigated as a model of superconducting cables. Using the critical state model, we analytically derive the ac loss Q_n of a total of n strips. The normalized loss Q_n/Q_1 is determined by the number of strips n and the ratio of the strip width 2w to the diameter 2R of the cylindrical former. When n>> 1 and w/R<< 1, the behavior
more » ... f Q_n is similar to that of an infinite array of coplanar strips.
doi:10.1063/1.2829793 fatcat:bwdnqc4q5fhthphowq4db7hyky