Journal of Power Electronics

The Korean Institute of Power Electronics (전력전자학회)
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Robust DTC Control of Doubly-Fed Induction Machines Based on Input-Output Feedback Linearization Using Recurrent Neural Networks

  • Payam, Amir Farrokh (Center of Excellence on Applied Electromagnetic Systems, University of Tehran) ;
  • Hashemnia, Mohammad Naser (Department of Electrical Engineering, Sharif University of Technology) ;
  • Fai, Jawad (Center of Excellence on Applied Electromagnetic Systems, University of Tehran)
  • Received : 2010.07.28
  • Published : 2011.09.20
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Abstract

This paper describes a novel Direct Torque Control (DTC) method for adjustable speed Doubly-Fed Induction Machine (DFIM) drives which is supplied by a two-level Space Vector Modulation (SVM) voltage source inverter (DTC-SVM) in the rotor circuit. The inverter reference voltage vector is obtained by using input-output feedback linearization control and a DFIM model in the stator a-b axes reference frame with stator currents and rotor fluxes as state variables. Moreover, to make this nonlinear controller stable and robust to most varying electrical parameter uncertainties, a two layer recurrent Artificial Neural Network (ANN) is used to estimate a certain function which shows the machine lumped uncertainty. The overall system stability is proved by the Lyapunov theorem. It is shown that the torque and flux tracking errors as well as the updated weights of the ANN are uniformly ultimately bounded. Finally, effectiveness of the proposed control approach is shown by computer simulation results.

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References

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