Induction motor drives equipped with diode rectifier and small dc-link capacitance

Marko Hinkkanen, Jorma Luomi

    Research output: Contribution to journalArticleScientificpeer-review

    77 Citations (Scopus)
    154 Downloads (Pure)

    Abstract

    This paper deals with sensorless vector-controlled induction motor drives that are fed by a frequency converter that is equipped with a diode front-end rectifier. A small dc-link capacitance is used, which makes it possible to replace the electrolytic capacitors with film capacitors. The natural frequency of the dc link is chosen to be considerably higher than six times the mains frequency but lower than the switching frequency. A recently proposed sensorless controller can be exploited; only minor modifications for small capacitances are needed. The simulation and experimental results of a 2.2-kW drive that is equipped with a capacitance of only 24 uF demonstrate operation in a wide speed range.
    Original languageEnglish
    Pages (from-to)312-320
    JournalIEEE Transactions on Industrial Electronics
    Volume55
    Issue number1
    DOIs
    Publication statusPublished - 4 Jan 2008
    MoE publication typeA1 Journal article-refereed

    Keywords

    • control
    • DC link
    • film capacitors
    • sensorless

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