Prediction of iron loss in magnetic laminations under PWM voltage supply

• Zbigniew Gmyrek ^[1]
  1. [1] Technical University of Lodz
• Localización: Compel: International journal for computation and mathematics in electrical and electronic engineering, ISSN 0332-1649, Vol. 28, Nº 6 (Special Issue: Selected Papers from ICSC 2008), 2009, págs. 1672-1687
• Idioma: inglés
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• Resumen

  • Purpose – The purpose of this paper is to discuss a new method of iron loss estimation under pulse width modulation (PWM) converter supply. The proposed method concerns the longitudinal magnetisation.

    Design/methodology/approach – A novel method of iron loss estimation applies values of iron losses that come from a single higher harmonic coexisting with a DC‐bias field. This method considers non‐linearity of ferromagnetic. Results of estimation are validated using experimental results.

    Findings – The paper formulates that the dependence of iron losses come from harmonics, on DC‐bias field. Moreover, it formulates possibilities of their utilization to iron loss estimation in case of deformed flux. On the other hand, it discusses the influence of DC‐bias field on static hysteresis and classical eddy current losses.

    Research limitations/implications – Experimental verification will still be needed as to the accuracy of the proposed model and applicability to various magnetic materials.

    Practical implications – The paper provides an easy mathematical method of iron loss estimation, under PWM voltage supply.

    Originality/value – The paper explains how to use an analytical method and results of iron losses come from single harmonics, obtained under coexistence with DC‐bias field, to iron loss estimation in case of longitudinal magnetisation where deformed magnetic flux occurs.