Adaptive Meshing for Eddy Current Calculations

In order to address their considerable impacts on both energy efficiency and performance requirements, eddy currents modeling and its accuracy are discussed from a thermodynamic approach. A dedicated error criterion is first described in a general framework, i.e., without any assumption about the potential formulation, including possible body motion, and independent from the dimension of the problem. After implementation, preliminary validation is given on an induction heating problem and an induction machine. As expected, the thermodynamic functional provides the global convergence of the calculation within an iterative procedure, whereas the conservation of the electromagnetic power is assessed locally to highlight the ill-checked elements.