A sensitivity analysis method for equivalent parameter extraction of transient magnetic field with internal circuits

Siu Lau Ho, Shuangxia Niu, Weinong Fu, Jianguo Zhu

Research output: Journal article publicationJournal articleAcademic researchpeer-review

4 Citations (Scopus)


A sensitivity analysis method for the equivalent parameter extraction of transient magnetic field problems with internally coupled circuits is presented. In contrast to conventional methods using physical meaning and physical relationships for parameter extraction, this method is based on a collection of mathematical system equations which include transient magnetic field equations and internal circuit equations. The extracted parameters include the collective effects of eddy currents, internal circuits, and mechanical motion. Compared with previous sensitivity analysis methods which extract only the equivalent inductance, the proposed algorithm extracts also the equivalent resistance. A laminated transformer with internal circuit is reported to validate and showcase the proposed method.
Original languageEnglish
Article number6136575
Pages (from-to)295-298
Number of pages4
JournalIEEE Transactions on Magnetics
Issue number2
Publication statusPublished - 1 Feb 2012


  • Electric circuit
  • equivalent parameter
  • finite-element method
  • indirect coupling
  • sensitivity
  • transient magnetic field

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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