Extraction of High-Frequency Phase-to-Phase Coupling in AC Machine Using Mixed-Mode Network Parameters

Younggon Ryu, Ki Jin Han

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

This paper proposes a method that extracts the phase-to-phase coupling of the three-phase stator winding of an ac motor for high-frequency characterization. Under the assumption of a symmetric structure, the multiport network parameters are obtained by the conversion of two-port mixed-mode network parameters. The proposed method simplifies the calculation to extract the impedance parameters of the three-phase winding structure without the full six-port measurement. Using the extracted parameters, we can construct a T-equivalent circuit and the corresponding transmission line model of a phase line, where the phase-to-phase coupling is distinguished from the self-coupling terms. Through the constructed equivalent circuit, the effect of the phase-to-phase coupling is clearly observed by comparing the high-frequency transmission line parameters. To verify the proposed method, the calculated input impedance is compared with the measured data.

Original languageEnglish
Article number8102104
JournalIEEE Transactions on Magnetics
Volume52
Issue number3
DOIs
StatePublished - Mar 2016

Keywords

  • AC motors
  • electromagnetic compatibility
  • equivalent circuit model
  • parameter estimation

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