Abstract
A 3D numerical method has been developed to model the coils used in inductive processes. The method is based on Ohm's law and Biot and Savart's law and can be used to solve eddy current problems at mid-range or high frequencies. The unknowns are the current density and electrical potential. The formulation involves singular integrals and produces a fully linear system, as in the boundary integral method. For these frequencies, only the surface of the conductors needs to be meshed. To obtain a general approach, the interpolation, derivation and integration techniques commonly used in the finite element method are employed. A number of examples show the interest of this method.