Currents and coupling losses distribution in superconducting cables carrying transport current

Author

Sytnikov, V.E. ; Svalov, G.G. ; Pervov, V.N. ; Prismakov, Yu V.

Author_Institution

All-Union Cable Res. & Dev. Inst., Moscow, Russia

Volume

28

Issue

1

fYear

1992

fDate

1/1/1992 12:00:00 AM

Firstpage

858

Lastpage

861

Abstract

The distribution of transport and induced currents in superconducting wires and flowing between the wires of a multiwire transposed cable is examined. Theoretical dependences for low-level excitation conditions are described. It is shown that the distribution of currents flowing between separate wires as well as the distribution of coupling losses is determined by two components, one of which attains a maximum at the end of the cable, while the other one becomes maximum at the cable´s axis. The correlation of components and its dependence on the cable´s design is determined. It has been found that at low excitation level the transport current has virtually no influence on the distribution of currents flowing between separate wires; hence, its influence on coupling losses is also negligible. Results of numerical analyses for the extracritical external field change rates and different transport currents are shown

Keywords

critical currents; current distribution; losses; superconducting cables; coupling losses distribution; extracritical external field change rates; induced current distribution; low-level excitation conditions; multiwire transposed cable; numerical analyses; superconducting cables; superconducting wires; transport current; Contact resistance; Current distribution; Energy loss; Equations; Instruction sets; Power cables; Superconducting cables; Superconducting filaments and wires; Superconducting integrated circuits; Voltage;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.120013

Filename

120013