  Electrical machines commonly consist of moving and stationary parts. The
field simulation of such devices can be very demanding if the underlying
numerical scheme is solely based on a domain discretization, such as in case of
the Finite Element Method (FEM). Here, a coupling scheme based on FEM together
with Boundary Element Methods (BEM) is presented that neither hinges on
re-meshing techniques nor deals with a special treatment of sliding interfaces.
While the numerics are certainly more involved the reward is obvious: The
modeling costs decrease and the application engineer is provided with an
easy-to-use, versatile, and accurate simulation tool.
