Time-Domain Homogenized Finite Eddy Current Analysis Using Recursive Convolution Method

This paper presents a novel method for effectively and accurately performing time-domain homogenized finite element analysis of multi-turn coil windings. In this method, the macroscopic complex permeability is represented by a partial fraction form, and then inverse Laplace transformation is performed using the recursive convolution method. The proposed method is approximately 100 times faster than conventional finite element analysis, with good agreement between the obtained results. Moreover, the results obtained by the proposed method were also in good agreement with those obtained by measurement.