Improved Method for Measuring Power Losses in the Inductor Core

This article considers the problem of measuring power losses in the ferrite core contained in the inductor. The new method of measuring these losses is proposed. This method uses thermal properties of the ferrite core. The concept of the developed measuring method and the measurement setup that enables implementation of this method are described. The advantage of the proposed method is a simple setup which does not require expensive instruments. Factors affecting the measurement standard uncertainty of the new method are discussed. Dependence of power losses in a selected ferrite core is measured using the new method and the classic literature method. The obtained results of measurements are compared and discussed. The way of estimating values of parameters occurring in the Steinmetz model based on the obtained measurement results is also indicated.