Eddy current and temperature field computation in transverse flux induction heating equipment for galvanizing line

This paper describes the 3-D eddy current FEM computation of transverse flux inductors used for heating strip in galvanized steel production. The adopted mathematical model consists of a differential equation system for the steady-state eddy current problem and a Fourier thermal conduction equation for moved media. The finite element method is applied in conjunction with the Galerkin method. The simplifications and boundary conditions required for an efficient solution are discussed.