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E. Schmidt:
"Electromagnetic Finite Element Analysis of Electrical Machines using Domain Decomposition and Floating Potentials";
Talk: 13th Conference on the Computation of Electromagnetic Fields (COMPUMAG), Evian, France; 2001-07-10 - 2001-07-12; in: "Proceedings", I (2001), 38 - 41.

An efficient finite element analysis of electrical machines using a
domain decomposition algorithm is proposed. The finite element model is
divided in distinct stator and rotor parts. The utilization of 1D shape
functions on the sliding surface between the independent parts allows for
the modeling of fully arbitrary rotor positions without any remeshing
even with periodic boundary conditions. The resulting unknowns for the
analysis are reduced corresponding to the nodes on the sliding surface.
Thus, a significant reduction of the calculation time for successive
rotor positions is established. The application of the method is shown
with a synchronous machine and a transverse flux machine.