AC Loss in a Superconducting Bi-Sr-Ca-Cu-O Bulk Sample Carrying AC Transport Current.

NEW SUPERCONDUCTING OXIDES IN THE Bi-Sr-Ca-Cu-O SYSTEM : MAGNETIC MEASUREMENTS AND STRUCTURAL DETERMINATION

-Detailed neutron diffraction structure analysis of Bi2SrzCaCu20s is reported. The effects of Pb-substitution on BizSrzCaCuzOs and Bi2Sr2CuOs are discussed, and magnetization measurement results on the 110 K phase in the Bi-Sr-Ca-Cu-0 system are given. Since the discovery of high Tc superconductivity in the Bi-Sr-Ca-Cu-0 system [I], two superconducting phases have been unambiguously identified,...

بررسی تاثیر سرب و زمان پخت برروی خواص ابررسانای سرامیکی Bi-Sr-Ca-Cu-O

AC loss in large-scale superconducting cables

The ac losses in superconducting composites have been a subject of study for a long time, but nevertheless several problems remain to be solved, especially with respect to large-scale cables where the geometry of the cable plays an important role. Some of the aspects that will be considered here, are: presence of fields parallel with the conductor, coupling loss in composite conductors having v...

Study of Superconducting Fault Current Limiter Device in a AC Railway System

Development of the electric networks led to more interconnection in this system, therefore high level of short circuit faults flows in the networks. Many destructive damages such as instability, insulation problems and voltage mitigation can highly play unwanted influences on the system’s equipment. Using appropriate protection devices like high voltage fuses, fast switches, and such devices...

Current conservation in two-dimensional AC-transport

The electric current conservation in a two-dimensional quantum wire under a time dependent field is investigated. Such a conservation is obtained as the global density of states contribution to the emittance is balanced by the contribution due to the internal charge response inside the sample. However when the global partial density of states is approximately calculated using scattering matrix ...