Hybrid Finite-Element Method for Discretizing Cylindrically Symmetric Parts in Electrotechnical Models

Inhalt:
When the geometry, the excitations and the boundary conditions of an electrotechnical model feature a transversal or cylindrical symmetry, the electromagnetic fields are known to preserve this symmetry. Then, the model is commonly discretized by a 2D cartesian or axisymmetric finite-element (FE) mesh respectively. In many models, however, only parts of the geometry are symmetric. Then, the electromagnetic fields are in general not symmetric and a full 3D model is required. In this paper, such partially symmetric model parts are discretized by a hybrid FE method in order to reduce the problem size and to improve the simulation efficiency.