Measurements and Modeling of Iron Losses in Guillotine and Laser Cut Soft-Magnetic Sheets

The article addresses the challenge of determining the individual components of ferromagnetic losses within the generally accepted three-component loss model. It carefully examines variations in each loss contribution caused by the varying proportion of material whose characteristics have been altered by the cutting process. Special emphasis is given to the approach for calculating eddy current losses, which are highly dependent on the proportion of damaged material. Additionally, the article investigates the dependence of excess losses on frequency. In this context, the applicability of known analytical formulas for determining eddy current losses and excess losses is discussed. The merit of this article is the accuracy of mapping the measurement results using the proposed methodology.