The axi-symmetric feature has been developed in order to simplify some cases and to save some calculation time. The electromagnetic 2D axi-symmetric feature is always coupled with the 3D thermal and structural solvers. The Electromagnetic forces and Joule heating are calculated in 2D along the mid-plane of the axi-symmetric parts (See side Figure) and are reported by simple rotations for coupling with the 3D mechanic and thermal. A future objective is to couple 2D axi-symmetric parts with classic 3D electromagnetic parts.