AC losses in applied longitudinal magnetic fields at variable temperatures
2004 (English)In: IEEE transactions on applied superconductivity (Print), ISSN 1051-8223, Vol. 14, no 1, 22-27 p.Article in journal (Refereed) Published
In most power devices, the conductor is carrying anac transport current while it is exposed to an ac magnetic fieldtransverse to the current path. In certain applications, such aspower cables or a control winding in a controllable reactor, theconductors are exposed to a magnetic field component longitudinalto the tape axis that is parallel to the current path. To createan improved base for the design of such power devices it is ofinterest to study the losses in high-temperature superconductortapes due to longitudinal field in detail. We have investigated thelosses at several temperatures of a nontwisted multifilamentaryBi-2223 tape when it was exposed to a longitudinal magnetic field.The losses were measured with a calorimetric method and theresults were compared with the critical state hysteresis loss model.The hysteresis losses are dominating at power frequencies (50,60 Hz) in the investigated field range 2–200 mT and are accuratelydescribed by the critical state hysteresis model.
Place, publisher, year, edition, pages
2004. Vol. 14, no 1, 22-27 p.
AC losses, high-temperature superconductor (HTS) tape, longitudinal magnetic field.
IdentifiersURN: urn:nbn:se:kth:diva-6158DOI: 10.1109/TASC.2004.825389ISI: 000220946300004ScopusID: 2-s2.0-2442688115OAI: oai:DiVA.org:kth-6158DiVA: diva2:10788
QC 201009272006-09-222006-09-222011-10-31Bibliographically approved