A sliding mode adaptive MRAS speed estimator for induction motors

Mihai Comanescu, Vadim Utkin

Research output: Chapter in Book/Report/Conference proceedingConference contribution

11 Scopus citations

Abstract

The paper presents a speed estimator for the induction motor (IM) drive. The estimation method is based on the rotor flux MRAS principle and uses sliding mode theory. In sensorless speed control, the accuracy and dynamic behavior of the speed estimate are important since this is used for feedback. The proposed estimation method uses the rotor fluxes as reference quantities in a MRAS scheme and attempts to estimate simultaneously the IM speed and the rotor time constant. Adaptation equations for the speed and the time constant are adopted based on Lyapunov's theory of nonlinear stability. With the equations obtained, due to singularity, only a speed estimator is obtained. The method assumes that the rotor fluxes in the stationary reference frame are available and uses them as reference quantities - this is the typical case with a direct field oriented IM drive. Simulation results on a 1/4 hp three-phase motor show good accuracy and satisfactory estimation dynamics.

Original languageEnglish (US)
Title of host publication2008 IEEE International Symposium on Industrial Electronics, ISIE 2008
Pages634-638
Number of pages5
DOIs
Publication statusPublished - Dec 29 2008
Event2008 IEEE International Symposium on Industrial Electronics, ISIE 2008 - Cambridge, United Kingdom
Duration: Jun 30 2008Jul 2 2008

Publication series

NameIEEE International Symposium on Industrial Electronics

Other

Other2008 IEEE International Symposium on Industrial Electronics, ISIE 2008
CountryUnited Kingdom
CityCambridge
Period6/30/087/2/08

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All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering
  • Control and Systems Engineering

Cite this

Comanescu, M., & Utkin, V. (2008). A sliding mode adaptive MRAS speed estimator for induction motors. In 2008 IEEE International Symposium on Industrial Electronics, ISIE 2008 (pp. 634-638). [4676921] (IEEE International Symposium on Industrial Electronics). https://doi.org/10.1109/ISIE.2008.4676921