Inductor AC Resistance Extraction Method from an Impedance Measurement Based on Complex Permeability Model

This paper proposes and evaluates a practical method for extraction and calculation of an inductor AC resistance from an impedance measurement. The method is based on complex permeability model, which mitigates an issue with core loss that can yield to significant errors in the prediction. The experimental measurements are done by a vector network analyzer and core loss estimations, which prove the method versatility to the wide range of wire types and ferrite core sizes.