On the properties of full-order observers for sensorless induction motor drives

Lennart Harnefors, Marko Hinkkanen

    Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

    1 Citation (Scopus)

    Abstract

    It is shown that a full-order observer for current, flux, and speed estimation of sensorless induction motor drives, under the assumption of fast current dynamics, has an equivalent implementations as a reduced-order observer for flux and speed estimation only. This reduced-order observer is analyzed. All gain selections which give stability for all operating conditions, including the regeneration mode (called complete stability), are found. Consequently, all gain selections of the full-order observer gains for which complete stability is obtained, under the assumption stated, are also found. This allows the stability properties of any candidate full-order observer gain selection to be evaluated.
    Original languageEnglish
    Title of host publication12th European Conference on Power Electronics and Applications (EPE2007)
    Number of pages9
    ISBN (Electronic)9789075815108
    DOIs
    Publication statusPublished - 2 Sep 2007
    MoE publication typeA4 Article in a conference publication
    EventEuropean Conference on Power Electronics and Applications - Aalborg, Denmark
    Duration: 2 Sep 20075 Sep 2007
    Conference number: 12

    Publication series

    NameEuropean Conference on Power Electronics and Applications
    ISSN (Print)2325-0313

    Conference

    ConferenceEuropean Conference on Power Electronics and Applications
    Abbreviated titleEPE-ECCE Europe
    CountryDenmark
    CityAalborg
    Period02/09/200705/09/2007

    Keywords

    • electrical drive
    • estimation technique
    • induction motor
    • sensorless control

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