A Novel Identification Method of Rotor Time Constant of Induction Motor

Qiang Li; Tong Guang Yang

doi:10.4028/www.scientific.net/AMM.87.249

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 87A Novel Identification Method of Rotor Time...

A Novel Identification Method of Rotor Time Constant of Induction Motor

Abstract:

Vector control system is dependent of parameters of motor, and rotor time constant usually changes with temperature. Through analyzing the influence of rotor time constant variations on the control system performance, a novel identification method based on adaptive flux observer is presented. Different with traditional pole assignment method, it implies robust control theory and Lyapunov stability theory, by solving a linear matrix inequality (LMI) to obtain the feedback gain matrix. The simulation results show that this method can identify the rotor time constant of induction motor accurately, and it has rapid converge, good indiscrimination degree and strong robustness.

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Periodical:

Applied Mechanics and Materials (Volume 87)

Pages:

249-254

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.87.249

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Online since:

August 2011

Authors:

Qiang Li, Tong Guang Yang

Keywords:

Adaptive Flux Observer, Induction Motor (IM), Linear Matrix Inequality (LMI), Rotor Time Constant

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