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High-temperature superconducting conductors (wires) of the second generation.
High-temperature superconducting conductors (wires) of the second generation allow you to increase current-carrying capacity 100-1000 times and have reduced the size by 2-5 times compared with conventional.
Technical characteristics of belt high-temperature superconducting wires
Technical characteristics of the superconducting power cables
Superconducting conductors (wires) currently presents band high-temperature superconducting conductors (wires) of the second generation.
The most important factor in the technology of high temperature superconducting conductors (HTSC HTSC wires) is “inherent” anisotropy of these materials. An essential structural feature of all HTSC are the atomic layers of composition CuO2, they are responsible for the appearance of superconductivity and the largest current flows parallel to these layers.
This fact determines the characteristics of the technology of high-temperature superconducting wires: to achieve high characteristics of the grain material should be focused possible the same, i.e., HTSC shall possess texture. The rotation of adjacent grains relative to each other at the corners of ω j or 10-15° reduces the value of the critical current on their border 10 times. That is, the material with an imperfect texture is unable to carry high currents, making it useless for application.
Advantages compared to oil-filled copper cables and other wires:
– the possibility of transmission of high power by increasing the current, not the voltage,
– small losses in the superconductor,
– increasing the capacity of 100-1000 times,
– reduction of dimensions by 2-5 times
– cleanliness: environmental, electromagnetic and thermal,
– fire and explosion safety,
– reduce mass-dimensional characteristics of marine engines and generators 2-4 times compared to traditional ones.
Superconducting conductors can be used:
– in ship systems electromagnetic demagnetization,
in introductory and output devices of large capacity,
in tomographic technique, electric current limiters, cryogenerator, transformers, magnetic separators, electric motors, generators,
– in other devices requiring high magnetic field, powerful currents and minimum energy loss.
Technical characteristics of belt high-temperature superconducting wires:
|Length, m||up to 1000|
|Cross-section, mm||0,1–0,2 x 4-10|
|The critical current, And||80-200|
|The critical current density, MA/cm2||over 1|
Technical characteristics of the superconducting power cables to DC and AC current on the basis of the tape circuits:
|Working voltage, kV||to 110|
|Operating current, kA||up to 20|