Asymptotic stability study of induction motor sensorless vector control systems with MRAS observer

Stoicuța, Olimpiu; Pana, Teodor

doi:10.1109/aqtr.2016.7501325

Cited by 4 publications

(1 citation statement)

References 8 publications

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“…Previous research showed that almost all known MRAS-type speed estimators are unstable in a certain range of regenerating mode (Bensiali et al 2015;Korzonek and Orłowska-Kowalska 2016;Pal et al in press;Purti et al 2015;Rashed et al 2003;Stoicuta and Pana 2016;Verma and Chakraborty 2014;Vonkomer and Zalman 2013). In addition, AFO with matrix G=0 has some unstable operating points in this mode (Chen et al 2014;Etien et al 2010;Harnefors and Hinkkanen 2008;Hinkkanen and Luomi 2004;Kubota et al 2002;Sunwankawin and Sangwongwanich 2006;Zaky 2011).…”

Section: General Remarksmentioning

confidence: 97%

Comparative Stability Analysis of Stator Current Error-based Estimators of Induction Motor Speed

Korzonek

Orłowska-Kowalska

2018

Power Electronics and Drives

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This paper deals with the stability problem of three stator current error-based estimators of induction motor speed, especially in the regenerating operation mode. The stability of the adaptive full-order observer (AFO) and two model reference adaptive systems (MRASs) based on a stator current error (MRASCCand MRASCV) is briefly analysed, and the stability borders are determined and compared. It is shown that MRASCVspeed estimator is stable in the whole operation range including the regenerating mode without any modifications. The stability enhancement method for AFO and MRASCCestimators is described, and the solution for their stability improvement is proposed. Torque-speed characteristics of the analysed MRAStype estimators in a wide range of drive speed and load torque changes are given, as well as the behaviour of estimators during transients is compared. The theoretical analysis and simulation test results are validated by experimental tests.

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