Modeling of variable magnetic elements including hysteresis and Eddy current losses

摘要

In this paper, a full model to simulate variable magnetic elements in power electronic converters is developed. The derived model is based on the reluctance equivalent circuit of magnetic systems. Specifically, the model considers core losses, determined through Jiles-Atherton hysteresis model, and Eddy current losses obtained using Dowell empirical formulas. The frequency dependence of the device losses is also considered. The model is compared to experimental measurements in order to verify its validity and accuracy, and then it is applied to study and characterize the double E-core variable inductor structure.