Title :
The Influence of Ferrite Characteristics on the Inductance of Coils With Rod Cores
Author :
Albach, Manfred ; Stadler, Alexander ; Spang, Matthias
Author_Institution :
Erlangen-Nurnberg Univ., Erlangen
fDate :
6/1/2007 12:00:00 AM
Abstract :
In this paper, the influence of material parameters on the inductance of a coil with a rod core is analytically calculated and verified by measurements and simulations. The magnetic field is split up into the field from the air coil alone and in a second part, which takes the influence of the rod core into account. To calculate the influence of the core the field, equations are solved by means of an orthogonal expansion using piecewise defined orthogonal functions with complex eigenvalues. A matrix calculus is introduced in order to obtain a compact mathematical formulation and a relatively simple evaluation on a PC
Keywords :
coils; eigenvalues and eigenfunctions; ferrite devices; magnetic cores; matrix algebra; air coils; coil inductance; complex eigenvalues; ferrite characteristics; magnetic fields; material parameters; mathematical formulation; matrix calculus; rod cores; Analytical models; Coils; Eigenvalues and eigenfunctions; Equations; Ferrites; Inductance measurement; Magnetic analysis; Magnetic cores; Magnetic field measurement; Magnetic materials; Ferrite; inductance; orthogonal expansion; rod core;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2007.893769
