Application of Mixed Finite Element and Natural Element Method in anti-periodic electromagnetic devices 1

Abstract

In this paper, the Mixed Finite Element and Natural Element (Mixed FEM-NEM) Method is applied to determine the flux distribution in magnetic devices using its reduced magnetic circuit models. In this solution, the NEM is applied exclusively in the gap of the devices where deformations of the mesh are expected in case of movement and the FEM is applied in the remainder magnetic circuit. In order to reduce the computational cost, the use of anti-periodic boundary conditions is proposed allowing the reduction of the entire domain model. To show the effectiveness of the proposed methodology, the problem is solved by using FEM and NEM in separate, and by the mixed FEM-NEM. The obtained results are compared using an error estimator and the computational cost.