Prediction of iron loss in magnetic laminations under PWM voltage supply

摘要

Purpose - The purpose of this paper is to discuss a new method of iron loss estimation under pulsernwidth modulation (PWM) converter supply. The proposed method concerns the longitudinalrnmagnetisation.rnDesign/methodology/approach - A novel method of iron loss estimation applies values of ironrnlosses that come from a single higher harmonic coexisting with a DC-bias field. This method considersrnnon-linearity of ferromagnetic. Results of estimation are validated using experimental results.rnFindings - The paper formulates that the dependence of iron losses come from harmonics, onrnDC-bias field. Moreover, it formulates possibilities of their utilization to iron loss estimation in case ofrndeformed flux. On the other hand, it discusses the influence of DC-bias field on static hysteresis andrnclassical eddy current losses.rnResearch limitations/implications - Experimental verification will still be needed as to thernaccuracy of the proposed model and applicability to various magnetic materials.rnPractical implications - The paper provides an easy mathematical method of iron loss estimation,rnunder PWM voltage supply.rnOriginality/value - The paper explains how to use an analytical method and results of iron lossesrncome from single harmonics, obtained under coexistence with DC-bias field, to iron loss estimation inrncase of longitudinal magnetisation where deformed magnetic flux occurs.