An improved 3-d Edge Finite Element Method for Eddy -Current Analysis of Induction Furnace Using Sliced Models

Especially for higher frequencies, 3-d eddy current analysis usual requires a very fine division mesh, resulting in long computation time and high cost. In this paper the authors present an improved method for analyzing complex 3-D eddy current problems using an edge finite element method, which enables analysis to take place while using only a small symmetrical slice of the model. The advantages of the proposed method are : Ease of dealing with boundary conditions on an arbitrary plane, and a decrease in the number of elements, which greatly reduces memory requirements and computation time. The method also exhibits improvements in convergence rate and accuracy, with less computation cost