Title :
Finite element modelling of thin skin depth problems using magnetic vector potential
Author :
Rodger, D. ; Leonard, P.J. ; Lai, H.C. ; Coles, P.C.
Author_Institution :
Bath Univ., UK
fDate :
3/1/1997 12:00:00 AM
Abstract :
A technique for modelling thin skin depth eddy currents in 3D devices using the magnetic vector potential A is presented. An analytic solution for the magnetic field in the thin skin is used to develop a surface impedance which appears as a surface integral at faces of elements which interface the thin skin eddy current region. The method has been implemented using classical nodal variable finite elements. Results are compared with an analytic solution and measurements from a nonlinear test rig
Keywords :
eddy currents; electric impedance; finite element analysis; integral equations; magnetic fields; skin effect; 3D devices; analytic conducting sphere; analytic solution; finite element modelling; magnetic field; magnetic vector potential; measurements; nodal variable finite elements; nonlinear test rig; surface impedance; surface integral; thin skin depth problems; time harmonic problems; Eddy currents; Finite element methods; Impedance measurement; Integral equations; Magnetic analysis; Magnetic fields; Skin; Slabs; Surface impedance; Testing;
Journal_Title :
Magnetics, IEEE Transactions on
