Development and validation of a fast thermal finite element solver

Nowadays, the knowledge of temperatures inside electrical machines is an important criteria, especially if further power density enhancements or frame size reductions are aimed at. Furthermore, temperature estimation in permanent magnets is an essential part of the design process for electrical machine due to their affect on the electromagnetic behaviour. In this paper a particularly fast thermal finite element solver is introduced. By use of boundary conditions for thin layer geometries and the air gap, the number of elements can be reduced significantly.