Contribution to the finite element analysis of eddy‐currents in multi‐conductor windings surrounded by magnetically non‐linear media Available to Purchase

In the finite element analysis of electrical machines the multi‐conductor winding in a stator slot is usually modeled simply by a single conductor with constant current density. The size of a finite element problem due to the precise modeling of eddy currents in the multi‐conductor windings can be much larger compared to the single conductor model. The paper investigates a new FEM approach for the consideration of eddy‐currents in multi‐conductor windings surrounded by nonlinear media, a case typical in electrical machinery. The method, called elimination of inner nodes, is evaluated in the paper as a possible solution for multi conductor eddy current problems. The paper presents examples and concludes in what circumstances the method of elimination is efficient.