FROM 1D TO 3D MODELING OF MAGNETIC CIRCUITS BY A SUBPROBLEM FINITE ELEMENT TECHNIQUE

Abstract

In this paper, the subproblem finite element technique is developed for model refinements of magnetic circuits in electrical machines. The method allows a complete problem composed of local and global fields to split into lower dimensions with independent meshes. Sub models are performed from 1-D to 2-D as well as 3-D models, linear to nonlinear problems, without depending on the meshes of previous subproblems. The subproblems are contrained via interface and boundary conditions. Each subproblem is independently solved on its own domain and mesh without depending on the meshes of previous subproblems, which facilitates meshing and may increase computational efficiency on both local fields and global quantities. The complete solution is then defined as the sum of the subproblem solutions by a superposition method.