Title :
On predicting the effectiveness of magnetic shields at low frequencies
Author :
Taylor, Clayborne D. ; Harrison, Charles W., Jr. ; Younan, Nicolas H.
Author_Institution :
Dept. of Electr. & Comput. Eng., Mississippi State Univ., Mississippi State, MS, USA
Abstract :
An exact analysis of the static magnetic field penetration through a planar foil of magnetic material is presented. A formulation for the magnetic field penetration through a sheet of ferromagnetic material from a current-carrying wire oriented parallel to the sheet is developed. Questions of nonlinear characteristics and saturation are addressed. Results are provided for a few commercially available materials. A shield design procedure is also suggested
Keywords :
electric current; ferromagnetic materials; magnetic shielding; wires (electric); current-carrying wire; exact analysis; ferromagnetic material; low frequencies; magnetic material; magnetic shields; nonlinear characteristics; planar foil; saturation; shield design; shielding effectiveness; shielding performance; static magnetic field penetration; Frequency; Magnetic analysis; Magnetic fields; Magnetic flux; Magnetic flux density; Magnetic materials; Magnetic shielding; Nonlinear equations; Saturation magnetization; Wire;
Conference_Titel :
Electromagnetic Compatibility, 1993. Symposium Record., 1993 IEEE International Symposium on
Conference_Location :
Dallas, TX
Print_ISBN :
0-7803-1304-6
DOI :
10.1109/ISEMC.1993.473754
