A robust sensorless sliding mode observer with speed estimate for the flux magnitude of the induction motor drive

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4 Scopus citations

Abstract

The paper presents a sensorless sliding mode observer for the flux magnitude of the induction motor (IM) drive. In order to implement a vector control scheme for the IM, the angle of the rotor flux and the flux magnitude are needed. To obtain them, it is typical to use a stationary frame flux observer - once the α, β flux components have been estimated, they are used to compute the flux angle and the flux magnitude. However, in Indirect Field Orientation methods, such an observer is not used; then, a separate flux magnitude estimator is needed. The paper presents a flux observer that is based on a modified IM model in the rotating reference frame. This is constructed on the skeleton of a sensored observer - in order to make it sensorless, the observer is fed with a speed estimate. The paper shows that, with a certain gain design, the resulting sensorless observer is insensitive to the potential input speed inaccuracy. The observer yields an accurate flux magnitude without measuring the speed.

Original languageEnglish (US)
Title of host publicationProceedings - 2015 9th International Conference on Compatibility and Power Electronics, CPE 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages224-229
Number of pages6
ISBN (Electronic)9781479963010
DOIs
StatePublished - Aug 31 2015
Event9th International Conference on Compatibility and Power Electronics, CPE 2015 - Caparica, Lisbon, Portugal
Duration: Jun 24 2015Jun 26 2015

Publication series

NameProceedings - 2015 9th International Conference on Compatibility and Power Electronics, CPE 2015

Other

Other9th International Conference on Compatibility and Power Electronics, CPE 2015
CountryPortugal
CityCaparica, Lisbon
Period6/24/156/26/15

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All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering
  • Energy Engineering and Power Technology

Cite this

Comanescu, M. (2015). A robust sensorless sliding mode observer with speed estimate for the flux magnitude of the induction motor drive. In Proceedings - 2015 9th International Conference on Compatibility and Power Electronics, CPE 2015 (pp. 224-229). [7231077] (Proceedings - 2015 9th International Conference on Compatibility and Power Electronics, CPE 2015). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/CPE.2015.7231077