Reducing estimation error due to digitizing problem in a speed sensorless control of induction motor

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Abstract

This paper proposes a strategy for reducing the estimation error due to the digitizing problem in a speed sensorless induction motor control using the speed adaptive observer. An estimated current error compensation is introduced into the rotor magnetizing current's and synchronous speed's calculations in the flux model. A modification of the full-order observer is made in order to affect the compensation strategy into the observer. This modified observer uses the rotor flux calculated by the flux model instead of estimating the flux by itself. The proposed strategy can reduce effectively the estimation error. Simulation results confirm the effectiveness of the proposed strategy.

Original languageEnglish
Title of host publicationIECON 2005
Subtitle of host publication31st Annual Conference of IEEE Industrial Electronics Society
Pages1677-1682
Number of pages6
DOIs
Publication statusPublished - 1 Dec 2005
EventIECON 2005: 31st Annual Conference of IEEE Industrial Electronics Society - Raleigh, NC, United States
Duration: 6 Nov 200510 Nov 2005

Publication series

NameIECON Proceedings (Industrial Electronics Conference)
Volume2005

Conference

ConferenceIECON 2005: 31st Annual Conference of IEEE Industrial Electronics Society
CountryUnited States
CityRaleigh, NC
Period6/11/0510/11/05

Keywords

  • Adaptive Observer
  • Estimation Error
  • Induction Motor
  • Speed Sensorless Control

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