Open AccessПереходные процессы при токовой перегрузке в цепи переменного тока с ВТСП-проводом
Author(s) -
В.А. Мальгинов,
А.В. Мальгинов,
Л.С. Флейшман
Publication year - 2019
Publication title -
pisʹma v žurnal tehničeskoj fiziki
Language(s) - English
Resource type - Journals
eISSN - 1726-7471
pISSN - 0320-0116
DOI - 10.21883/pjtf.2019.07.47532.17657
Subject(s) - superconductivity , current (fluid) , amplitude , condensed matter physics , phase difference , phase (matter) , voltage , electrical conductor , materials science , sign (mathematics) , electrical engineering , physics , optics , composite material , engineering , mathematics , mathematical analysis , quantum mechanics
It has been found that the loss of superconductivity in HTSC wires under ac current overload is accompanied by the change in sign of the phase difference between current and voltage. In a stabilized second-generation HTSC wire under an overload the oscillations of ac current and voltage amplitudes have been found due to the oscillations of the normal zone size in the superconducting layer. The change in sign of the phase difference can be applied for a timely registration of a normal zone nucleation in current-carrying conductors of superconducting equipment.