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An Extended Speed Adaptive Observer with Auxiliary Variables for Sensorless Induction Motor Low-Speed Operation

  • School of Electrical Engineering and Automation, Harbin Institute of Technology

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

Abstract

This paper proposed an extended speed adaptive observer (ESAO) with auxiliary variables to improve the stability of sensorless induction motor (IM) low-speed operation. The mathematical model of IM is reconstructed by introducing an auxiliary variable. On this basis, an ESAO is designed with a novel speed adaption law. Compared with the conventional adaptive full-order observer (AFO), the proposed ESAO can reduce the unstable region in low-speed operation without without complex feedback gain design. Experimental results show the effectiveness of the proposed method.

Original languageEnglish
Title of host publication2019 22nd International Conference on Electrical Machines and Systems, ICEMS 2019
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781728133980
DOIs
StatePublished - Aug 2019
Externally publishedYes
Event22nd International Conference on Electrical Machines and Systems, ICEMS 2019 - Harbin, China
Duration: 11 Aug 201914 Aug 2019

Publication series

Name2019 22nd International Conference on Electrical Machines and Systems, ICEMS 2019

Conference

Conference22nd International Conference on Electrical Machines and Systems, ICEMS 2019
Country/TerritoryChina
CityHarbin
Period11/08/1914/08/19

Keywords

  • ESAO
  • Stability
  • induction motor drives
  • low speed operation
  • sensorless

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