منابع مشابه
AC losses in coated conductors
Future use of coated conductors in electric power applications like transmission cables, transformers or fault current limiters is sensitive to the amount of dissipation in the AC regime. This paper analyses factors controlling AC loss of coated conductors in typical configurations: the self-field case when transport current generates the magnetic field, and the case of AC applied field where t...
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We discuss the microwave energy losses in superconductors in the critical state. The field-induced variations of the surface resistance are determined, in the framework of the Coffey and Clem model, by taking into account the distribution of the vortex magnetic field inside the sample. It is shown that the effects of the critical state cannot generally be disregarded to account for the experime...
متن کاملDissipation in Mesoscopic Superconductors with Ac Magnetic Fields
The response of mesoscopic superconductors to an ac magnetic field is investigated both experimentally and with numerical simulations. We study small square samples with dimensions of the order of the penetration depth. We obtain the ac susceptibitity χ = χ+ iχ at microwave frequencies as a function of the dc magnetic field Hdc. We find that the dissipation, given by χ , has a non monotonous be...
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The E-J power law as electric characterization of the HTS material in Finite Element computations has shown good agreement with measurements of field-dependent critical current density and losses due to transport current. We use this technique to investigate the loss caused by AC transport current in self-field and in applied AC magnetic field in both rectangular monocore and multicore tapes, w...
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ژورنال
عنوان ژورنال: TEION KOGAKU (Journal of Cryogenics and Superconductivity Society of Japan)
سال: 1969
ISSN: 0389-2441,1880-0408
DOI: 10.2221/jcsj.4.157