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Internal Impedance of Composite Conductors with Arbitrary Cross Section

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2 Author(s)
Thomas Demeester ; Dept. of Inf. Technol., Ghent Univ., Ghent ; DaniËl De Zutter

A new way to calculate the internal inductance and resistance per unit length for an inhomogeneous conductor with arbitrary cross-sectional geometry is presented, based on the surface admittance boundary operator. The method is formulated in such a way, that the physical meaning of the internal impedance is clarified, as obtained by disregarding the external magnetic field. A comparison is made with the definitions known in literature to determine the internal impedance. In a number of numerical examples, the differences between those definitions are elucidated, and some physical properties of the internal impedance are investigated.

Published in:

IEEE Transactions on Electromagnetic Compatibility  (Volume:51 ,  Issue: 1 )