A FEM approach to shielding effectiveness in braided-shield cables
- Dipartimento di Energia Elettricia, Universita' di Roma, Via Eudossiana 18, 00184 Roma (IT)
The analysis of the coupling between a transient electromagnetic field and a braided-shield cable is a problem of decided importance in electromagnetic compatibility studies. The shield transfer impedance is generally introduced to calculate the effects produced on the inner conductors by the penetration of the magnetic field through the shield and its apertures. This coupling problem is described by the homogeneous Helmholtz equation in terms of the magnetic vector potential. Because of the complex geometry involved a numerical procedure based on the finite element method (FEM) has been developed for a two-dimensional region in the frequency domain. Absorbing boundary conditions (ABC) in artificial boundaries are introduced to limit the area of FEM computation. Numerical illustrative examples are given and the results obtained with the proposed procedure are compared with analytical solutions.
- OSTI ID:
- 6527308
- Journal Information:
- IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers); (USA), Journal Name: IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers); (USA) Vol. 26:2; ISSN 0018-9464; ISSN IEMGA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
240301* -- Power Transmission Lines & Cables-- Power Cables-- (1990-)
CABLES
CONDUCTOR DEVICES
ELECTRIC CABLES
ELECTRIC IMPEDANCE
ELECTRICAL EQUIPMENT
ELECTRICAL TRANSIENTS
ELECTROMAGNETIC FIELDS
EQUIPMENT
FINITE ELEMENT METHOD
IMPEDANCE
NUMERICAL SOLUTION
TRANSIENTS
VOLTAGE DROP