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Asynchronous machine rotor speed estimation using a tabulated numerical approach
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DOI：10.1016/j.ymssp.2017.04.017.png)
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This paper proposes a new method to estimate the rotor speed of the asynchronous machine by looking at the estimation problem as a nonlinear optimal control problem. The behavior of the nonlinear plant model is approximated off-line as a prediction map using a numerical one-step time discretization obtained from simulations. At each time step, the speed of the induction machine is selected satisfying the dynamic fitting problem between the plant output and the predicted output, leading the system to adopt its dynamical behavior. Thanks to the limitation of the prediction horizon to a single time-step, the execution time of the algorithm can be completely bounded. It can thus easily be implemented and embedded into a real-time system to observe the speed of the real induction motor. Simulation results show the performance and robustness of the proposed estimator. (C) 2017 Elsevier Ltd. All rights reserved.
Keyword:
Induction machine
Sensorless speed estimation
Discrete time control
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IF:
8.9
论文数:
1.3W
被引数:
6.6W
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