Title :
Fast computation of quasi-static magnetic fields around nonperfectly conductive shields
Author :
Feliziani, M. ; Maradei, F.
Author_Institution :
Dept. of Electr. Eng., l´´Aquila Univ., Italy
fDate :
9/1/1998 12:00:00 AM
Abstract :
A prediction model of low frequency, low impedance magnetic fields around conductive shield configurations in presence of arbitrary sources is proposed. The new model is based on the elimination of the shield barrier from the computational domain and consists in the application of impedance network boundary conditions (INBCs) on the shield surfaces which permits one to take into account the field discontinuity produced by the nonperfectly conductive region. The derivation of the INBCs on the shield surfaces is discussed in terms of the magnetic vector potential
Keywords :
electromagnetic compatibility; finite element analysis; magnetic fields; magnetic shielding; arbitrary sources; computational domain; conductive shield configurations; field discontinuity; impedance network boundary conditions; low impedance magnetic fields; magnetic vector potential; nonperfectly conductive shields; prediction model; quasi-static magnetic fields; shield barrier; Boundary conditions; Computer networks; Current density; Finite element methods; Frequency; Magnetic analysis; Magnetic domains; Magnetic shielding; Predictive models; Surface impedance;
Journal_Title :
Magnetics, IEEE Transactions on
