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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Gomory, F. Frolek, L. Souc, J. Coletta, G. Spreafico, S. |
| Copyright Year | 2002 |
| Abstract | We investigated the effect of nonuniform current distribution on the critical current experimentally determined on a superconducting cable. In theoretical model, the cable is considered as a set of parallel current paths, each containing one single tape. Critical currents, n-factors and contact resistances between each tape and current termination are the input data of the model. Spread in these parameters results in a nonuniform distribution of DC current among tapes. Then, the voltages on different tapes would vary, and the determination of cable's critical current by a standard procedure becomes difficult. This was shown on a single-layer cable model, manufactured by placing 16 straight Bi-2223/Ag tapes in parallel on a cylindrical epoxy fiberglass mandrel. With the help of brass shunts connected in series with each tape, the currents in all the tapes can be measured simultaneously. Experimental signals registered on different tapes were in excellent agreement with theoretical predictions. We found the spread in contact resistances to be rather critical issue for our 1 m long model. |
| Sponsorship | Council on Superconductivity Appl. Superconductivity Conference Inc MIT |
| Starting Page | 1968 |
| Ending Page | 1971 |
| Page Count | 4 |
| File Size | 530938 |
| File Format | |
| ISSN | 10518223 |
| Volume Number | 13 |
| Issue Number | 2 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2003-06-01 |
| Publisher Place | U.S.A. |
| Access Restriction | One Nation One Subscription (ONOS) |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Current measurement Critical current Superconducting cables Power cables Voltage Contacts Copper Electrical resistance measurement Current distribution Virtual manufacturing |
| Content Type | Text |
| Resource Type | Article |
| Subject | Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering |
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