Gain scheduling of a full-order observer for sensorless induction motor drives

Zengcai Qu, Marko Hinkkanen, Lennart Harnefors

Research output: Contribution to journalArticleScientificpeer-review

36 Citations (Scopus)
185 Downloads (Pure)

Abstract

This paper deals with the design of a speed-adaptive full-order observer for sensorless induction motor (IM) drives. A general stabilizing observer gain matrix, having three free design parameters, is used as a design framework. A gain-scheduled selection of the free design parameters is proposed. Furthermore, the full-order observer is augmented with the stator-resistance adaptation, and the local stability of the augmented observer is analyzed. The performance of the proposed full-order observer design is experimentally compared with a reduced-order observer using a 2.2-kW IM drive.
Original languageEnglish
Pages (from-to)3834-3845
JournalIEEE Transactions on Industry Applications
Volume50
Issue number6
DOIs
Publication statusPublished - 20 Nov 2014
MoE publication typeA1 Journal article-refereed

Keywords

  • flux estimation
  • full-order observer
  • induction motor
  • resistance adaptation
  • sensorless
  • stability

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