Time domain modeling of eddy current effects for transformer transients

Francisco de Leon, Adam Semlyen

Research output: Contribution to journalArticlepeer-review


Eddy current effects have been included in the model of the transformer for the study of electromagnetic transients. Existing analytical formulas for the calculation of losses in the windings have been evaluated. Various equivalent circuits have been fitted to represent in the time domain the damping produced by eddy currents in the windings. A frequency dependent model has been derived for the iron core, based on the physical distribution of losses and magnetization effects. The parameters of this model are obtained by optimal discretization of the laminations. Simulations of transients have been presented to show the effects of eddy currents in the damping of transients.

Original languageEnglish (US)
Pages (from-to)271-280
Number of pages10
JournalIEEE Transactions on Power Delivery
Issue number1
StatePublished - Jan 1993


  • Eddy currents
  • Electromagnetic transients
  • Transformer modeling

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering


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