The control system of induction motors is designed to achieve dynamic stability, allowing accurate tracking of flux and speed. However, changes in electrical parameters, due to temperature rise or saturation level, can lead to undesirable errors of speed and position, eventually resulting in instability. This paper presents two modes for parametric identification of the induction motor based on the least squares method: batch estimator and recursive estimator. The objective is to update the electrical parameters during operation when the motor is driven by a vector control system. A drawback related to the batch estimator is the need for high quantity of available memory to make the process of identification robust enough. The proposed algorithm allows the batch estimator to be viewed as a single matrix problem reducing the need for processing memory. The identification procedure is based on the stator currents measurement and stator fluxes estimation. Basically, both modes of identification will be analyzed. Experimental results are presented to demonstrate the theoretical approach.
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July 2017
Research-Article
On-Line Parameter Identification of an Induction Motor With Closed-Loop Speed Control Using the Least Square Method
Rafael de Farias Campos,
Rafael de Farias Campos
Department of Electrical Engineering,
Santa Catarina State University,
Joinville SC 89219-710, Brazil
e-mail: rafacfar@gmail.com
Santa Catarina State University,
Joinville SC 89219-710, Brazil
e-mail: rafacfar@gmail.com
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Jose de Oliveira,
Jose de Oliveira
Department of Electrical Engineering,
Santa Catarina State University,
Joinville SC 89219-710, Brazil
e-mail: jose.oliveira@udesc.br
Santa Catarina State University,
Joinville SC 89219-710, Brazil
e-mail: jose.oliveira@udesc.br
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Ademir Nied
Ademir Nied
Department of Electrical Engineering,
Santa Catarina State University,
Joinville SC 89219-710, Brazil
e-mail: ademir.nied@udesc.br
Santa Catarina State University,
Joinville SC 89219-710, Brazil
e-mail: ademir.nied@udesc.br
Search for other works by this author on:
Rafael de Farias Campos
Department of Electrical Engineering,
Santa Catarina State University,
Joinville SC 89219-710, Brazil
e-mail: rafacfar@gmail.com
Santa Catarina State University,
Joinville SC 89219-710, Brazil
e-mail: rafacfar@gmail.com
Eduardo Couto
Jose de Oliveira
Department of Electrical Engineering,
Santa Catarina State University,
Joinville SC 89219-710, Brazil
e-mail: jose.oliveira@udesc.br
Santa Catarina State University,
Joinville SC 89219-710, Brazil
e-mail: jose.oliveira@udesc.br
Ademir Nied
Department of Electrical Engineering,
Santa Catarina State University,
Joinville SC 89219-710, Brazil
e-mail: ademir.nied@udesc.br
Santa Catarina State University,
Joinville SC 89219-710, Brazil
e-mail: ademir.nied@udesc.br
1Corresponding author.
Contributed by the Dynamic Systems Division of ASME for publication in the JOURNAL OF DYNAMIC SYSTEMS, MEASUREMENT, AND CONTROL. Manuscript received May 17, 2016; final manuscript received January 19, 2017; published online May 12, 2017. Assoc. Editor: Evangelos Papadopoulos.
J. Dyn. Sys., Meas., Control. Jul 2017, 139(7): 071010 (8 pages)
Published Online: May 12, 2017
Article history
Received:
May 17, 2016
Revised:
January 19, 2017
Citation
Campos, R. D. F., Couto, E., de Oliveira, J., and Nied, A. (May 12, 2017). "On-Line Parameter Identification of an Induction Motor With Closed-Loop Speed Control Using the Least Square Method." ASME. J. Dyn. Sys., Meas., Control. July 2017; 139(7): 071010. https://doi.org/10.1115/1.4035872
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