Title :
A new approach to modelling dominant AC loss in HTc superconducting solenoidal windings
Author :
Goddard, K.F. ; Sykulski, Jan K. ; Stoll, R.L.
Author_Institution :
Dept. of Electr. Eng., Southampton Univ., UK
fDate :
5/1/1999 12:00:00 AM
Abstract :
The paper presents a novel method of calculating AC loss in solenoidal high temperature superconducting windings of the transformer type. Losses caused by the external magnetic field and due to transport current are modelled together and account is taken of highly nonlinear characteristics of the material. In tape conductors the loss due to the parallel field component is usually small whereas the effect of the normal field component is significant. A nonlinear 2D finite difference formulation is derived for the superconductor and linked with a linear finite element model representing the rest of the transformer and the interaction between coils
Keywords :
finite difference methods; finite element analysis; high-temperature superconductors; magnetic fields; magnetic leakage; power transformers; solenoids; superconducting coils; superconducting tapes; superconducting transformers; transformer windings; HTc superconducting solenoidal windings; coils interaction; dominant AC loss monitoring; external magnetic field; highly nonlinear characteristics; linear finite element model; magnetic losses; nonlinear 2D finite difference formulation; normal field component; parallel field component; solenoidal high temperature superconducting windings; tape conductors; transformer type windings; transport current; Conducting materials; Creep; High temperature superconductors; Magnetic materials; Power generation economics; Power transformers; Superconducting coils; Superconducting films; Superconducting materials; Superconducting transmission lines;
Journal_Title :
Magnetics, IEEE Transactions on
