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ac self-field loss measurement system
Review of Scientific Instruments, 1999The accuracy and reproducibility of a self-field ac loss measurement technique for high-temperature superconducting tapes using a digital lock-in amplifier are discussed. The influence of the reference phase setting on the error was calculated and verified experimentally for different degrees of inductive component compensation.
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AC losses of high-field superconductors
IEEE Transactions on Magnetics, 1970The Riemersma critical state model is applied to a long irreversible type-II superconductor carrying ac. Voltage waveforms, energy loss per cycle, and limiting values of effective resistivity are derived. For sinusoidal current of frequency f in 10-mil wire the critical current limit of resistivity is 4.06 × 10-14f (ω.m).
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AC losses in high-temperature superconductors
IEEE Transactions on Magnetics, 1991Intergranular and intragranular AC losses in the superconducting state of ceramic high-temperature superconductors are calculated using a critical state model for the intergranular loss contribution that is similar to that of Y.B. Kim et al. (1963) and the model of C.P. Bean (1962) for the intragranular loss.
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AC Losses in High-Tc Materials
1998Most anticipated applications of the high-temperature superconductors require that the material be subjected to time-varying or alternating applied currents and magnetic fields. To be economically competitive, the superconductor generally must have ac losses well below those in conventional materials such as copper.
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AC losses in high-temperature superconductors
IEE Colloquium on `Practical Applications of High Temperature Superconductors', 1995Ceramic superconductors experience losses when carrying alternating currents. A practical situation of particular importance for the possible use of such superconductors in power apparatus is 50 Hz excitation at liquid nitrogen temperature (77 K). A theoretical investigation of the one-dimensional AC current flow and associated losses in a ribbon or ...
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Antibiotic resistance in the patient with cancer: Escalating challenges and paths forward
Ca-A Cancer Journal for Clinicians, 2021Amila K Nanayakkara +2 more
exaly
Ac Losses in Type-II Superconductors
1991This paper discusses the physics of ac losses in type-II superconductors and in multifilamentary superconducting-normal composite conductors. As an introduction, the ac eddy-current losses in a homogeneous normal conducting cylindrical specimen subjected to an alternating applied magnetic field are briefly reviewed.
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