Comparison of two novel MRAS strategies for identifying parameters in permanent magnet synchronous motors

Liu, Kan and Zhang, Q. and Zhu, Z. Q. and Zhang, J. and Shen, A. W. and Stewart, Paul (2010) Comparison of two novel MRAS strategies for identifying parameters in permanent magnet synchronous motors. International Journal of Automation and Computing, 7 (4). pp. 516-524. ISSN 1476-8186

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Comparison of two novel MRAS strategies for identifying parameters in permanent magnet synchronous motors
Two Model Reference Adaptive System (MRAS) estimators are developed for identifying the parameters of permanent magnet synchronous motors (PMSM) based on Lyapunov stability theorem and Popov stability criterion, respectively. The proposed estimators only need online detection of currents, voltages and rotor rotation speed, and are effective in the estimation of stator resistance, inductance and rotor flux-linkage simultaneously. Their performances are compared and verified through simulations and experiments. It shows that the two estimators are simple and have good robustness against parameter variation and are accurate in parameter tracking. However, the estimator based on Popov stability criterion, which can overcome the parameter variation in a practical system, is superior in terms of response speed and convergence speed since there are both proportional and integral units in the estimator in contrast to only one integral unit in the estimator based on Lyapunov stability theorem. In addition, there is no need of the expert experience which is required in designing a Lyapunov function.
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Official URL: http://dx.doi.org/10.1007/s11633-010-0535-3

Abstract

Two Model Reference Adaptive System (MRAS) estimators are developed for identifying the parameters of permanent magnet synchronous motors (PMSM) based on Lyapunov stability theorem and Popov stability criterion, respectively. The proposed estimators only need online detection of currents, voltages and rotor rotation speed, and are effective in the estimation of stator resistance, inductance and rotor flux-linkage simultaneously. Their performances are compared and verified through simulations and experiments. It shows that the two estimators are simple and have good robustness against parameter variation and are accurate in parameter tracking. However, the estimator based on Popov stability criterion, which can overcome the parameter variation in a practical system, is superior in terms of response speed and convergence speed since there are both proportional and integral units in the estimator in contrast to only one integral unit in the estimator based on Lyapunov stability theorem. In addition, there is no need of the expert experience which is required in designing a Lyapunov function.

Item Type:Article
Keywords:permanent magnet synchronous motors, Lyapunov stability., Popov stability, parameter estimation
Subjects:H Engineering > H600 Electronic and Electrical Engineering
Divisions:College of Science > School of Engineering
ID Code:2898
Deposited By:INVALID USER
Deposited On:15 Jul 2010 23:44
Last Modified:04 Dec 2013 21:39

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