3-D Multistrands Inductor Modeling: Influence of Complex Geometrical Arrangements

We study multistrands inductors in the context of high-frequency induction processes. They present the advantage of reducing Joule losses compared with solid inductors. We remind why that type of cable seems to be promising and what electromagnetic effects are already identified. We have to understand precisely what happens inside the inductor. Numerical simulation of the electromagnetic behavior of these objects is complicated due to the complexity of their 3-D geometry and to the size of the generated numerical system. We have developed a 3-D electromagnetic software based on an integral methods using classical Biot and Savart law. We applied this model for the simulation of multistrands cables with helical arrangement of strands. Execution time is reduced by the parallelization of the system building and the solver. We present some results obtained with 3-D simulations using integral methods for different configurations.