A review on methods to simulate three dimensional rotating electrical machine in magnetic vector potential formulation using edge finite element method under sliding surface principle

In recent years edge finite element method has become quite popular in modeling the three-dimensional rotating electrical machine due to its ability to represent the physical behavior of field along interface correctly. However, modeling becomes complex when significant mesh distortion occurs along a sliding surface due to movement. A remeshing step is needed, which increases computational cost. In order to avoid remeshing, efficient numerical methods have already been developed to model movement in the three-dimensional rotating electrical machine under edge finite element method. Nevertheless, very little research has been carried out on comparing these methods. The main objective of this paper is to compare the edge-based interpolation and mortar edge element method. To improve the accuracy of edge-based interpolation for tetrahedral mesh, we propose an improved strategy. Numerical results illustrate the accuracy, robustness and performance of the methods. A detailed comparison is presented based on the criteria mentioned above.

Automated summary

In recent years, the edge finite element method has gained popularity in modeling three-dimensional rotating electrical machines for its ability to accurately represent physical behavior. However, complications arise when significant mesh distortion occurs along a sliding surface, requiring a remeshing step that increases computational cost. Efficient numerical methods have been developed to model movement without remeshing, but little research has compared these methods. This paper aims to compare the edge-based interpolation and mortar edge element method, proposing an improved strategy for enhancing the accuracy of edge-based interpolation on tetrahedral meshes. Numerical results demonstrate the accuracy, robustness, and performance of the methods, with a detailed comparison presented based on the aforementioned criteria.