Effects of unevenly distributed critical currents and damaged coated conductors to AC losses of superconducting power transmission cables

Q. Li, N. Amemiya, K. Takeuchi, T. Nakamura, N. Fujiwara

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Two groups of superconducting power transmission cables composed of two layers of coated conductors with 4 mm width and 2 μm superconductor-thickness have been designed. In one group, four styles of unevenly distributed critical currents (Ic) are applied, while in the other group there is one damaged coated conductor in each cable. Trapezoidal critical current density (Jc) distribution with a sloping shoulder of 0.3 mm is assumed while calculating the AC losses of these cables numerically by using a one dimensional FEM model. Numerical results show that unevenly distributed Ic increase AC losses along with the increasing variance ratio which defines the difference between individual Ic and the average Ic. Even only one damaged coated conductor can dramatically increase AC losses no matter which layer it locates at. The detailed AC loss distributions among coated conductors are presented and the reasons for different influences of unevenly distributed Ic as well as damaged coated conductor are discussed.
Original languageEnglish
Pages (from-to)953-956
Number of pages4
JournalIEEE Transactions on Applied Superconductivity
Volume21
Issue number3
DOIs
Publication statusPublished - Jun 2011

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superconducting power transmission
Critical currents
Power transmission
cables
critical current
alternating current
Cables
conductors
Superconducting materials
shoulders
density distribution
Finite element method
current density

Cite this

Effects of unevenly distributed critical currents and damaged coated conductors to AC losses of superconducting power transmission cables. / Li, Q.; Amemiya, N.; Takeuchi, K.; Nakamura, T.; Fujiwara, N.

In: IEEE Transactions on Applied Superconductivity, Vol. 21, No. 3, 06.2011, p. 953-956.

Research output: Contribution to journalArticle

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