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Application of the hybrid finite element, finite difference technique to the solution of multistrand conductor problems

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2 Author(s)
Findlay, R.D. ; McMaster University, Hamilton, Ont., Canada. ; Murray, R.

An algorithm for the application of a hybrid finite element, finite difference technique for the solution of linear conductor problems has been developed. This paper describes the implementation of the technique to single layer helically spiralling conductor strand geometries. Such conductor configurations occur in hollow conductors with magnetically neutral spacers. However, the technique can also be used as an approximation to the solution of expanded conductor or ACSR conductor problems if it is assumed that the core wires remain substantially magnetically neutral. The influences of conductor pitch and strand diameter or equivalent circuit parameters are illustrated by considering a number of different configurations. Theoretical samples which are physically similar to actual ACSR specimens are analyzed in order to infer the inductive role of the core strand.

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Magnetics, IEEE Transactions on  (Volume:19 ,  Issue: 6 )