Improvements of the T- Omega method for 3-D eddy current analysis

Comparison of various methods for 3-D eddy current analysis

“…The conductivity oa of air inside the hole corresponding to Fig.l(b) is chosen as l(S/m) [4] for the T -Q method, and zero for the other methods. The conductivity of the thin sheet shown in Fig.l(a) is the same as o c of the brick.…”

DESCRIPTION OF MULTIPLY CONNECTED REGIONS WITH INDUCED CURRENTS USING <I>T</I>-<I>T</I>₀ METHOD

“…The T method suggested in [7], i.e., filling the holes with a highresistivity conducting material, has also been discussed in [5]. The authors of this paper have noticed that when analysing the systems with multiply connected regions the computational time depends on the selected values of resistivity ρ of the material filling the holes.…”

“…1. In order to avoid unadjustedeness of the T method to analyse systems with MCCR, in [7] it is suggested to fill in the "holes" with a conducting material of high resistivity ρ. After the holes have been filled with the conducting material one can get a "quasi-single connected conductor" in which for purposes of determining currents distribution the classic T formulation can be easily employed.…”

Improvements of convergence characteristics of Newton-Raphson method for nonlinear magnetic field analysis

“…The case of a=l corresponds to the conventional Newton-Raphson method. The optimum value aopt of the relaxation factor can be determined using thelinear search The residual Gi can be written as follows [6]:…”