Weak Coupling Between Electromagnetic and Structural Models for Electrical Machines

A weak coupling technique for an electromagnetic and a structural dynamic model formulated by the finite element method (FEM) is presented. The algorithm is able to estimate higher force harmonics with high accuracy and is hence suitable for acoustic simulations of electrical machines. High computational efforts using conventional algorithms are reduced significantly and accuracy is even enhanced. The algorithm is applied to compute vibrations of a skewed induction machine.