Wideband impedance measurements and modeling of DC motors for EMI predictions

Fatou Diouf, Frank Bernardus Johannes Leferink, Fabrice Duval, Mohamed Bensetti

    Research output: Contribution to journalArticleAcademicpeer-review

    15 Citations (Scopus)
    32 Downloads (Pure)


    In electromagnetic interference prediction, dc motors are usually modeled as a source and a series impedance. Previous researches only include the impedance of the armature, while neglecting the effect of the motor's rotation. This paper aims at measuring and modeling the wideband impedance of a dc motor under operating conditions. These measurements are performed by injecting a small signal, using a method based on conducted susceptibility measurement setups as described in military standards. Different setups are developed to cover a wideband, from 0 Hz up to 200 MHz. The measurements provide satisfying results for the wideband impedance of the rotating dc motor, and the setups’ validation is discussed. Finally, the resulting impedance is modeled as a passive impedance network.
    Original languageEnglish
    Pages (from-to)180-187
    Number of pages8
    JournalIEEE transactions on electromagnetic compatibility
    Issue number99
    Publication statusPublished - 13 Apr 2015


    • EC Grant Agreement nr.: FP7/2007-2013
    • EC Grant Agreement nr.: FP7/205294
    • Automotive industry
    • dc motors
    • electromagnetic interference (EMI)
    • frequency impedance measurements
    • small signal impendance
    • SPICE models
    • 2023 OA procedure


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