General core loss models on a magnetic lamination

An analytical core loss formula and a dynamic hysteresis core loss model have been developed. Experimental data for different lamination thicknesses have been measured and analyzed at various frequencies. Based on the analysis, an analytical eddy current loss model considering skin effect and a dynamic hysteresis finite element core loss model have been established and validated by experiments. The developed models are simple and efficient, and have been shown to be very accurate compared with the experiments. Moreover, the models can calculate core losses based on the input parameters obtained from experimental measurements at only one single frequency in a thin lamination. The models, to our best knowledge, are the first ones that are capable of calculating core losses for different thicknesses of materials and different operating frequencies, without a massive experimental database.