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Optimal Direct Torque Control of Three-Phase Symmetric Induction Motors


G. Papafotiou, T. Geyer, M. Morari

IEEE Conference on Decision and Control, Atlantis, Bahamas

Direct Torque Control (DTC) is a state of the art control methodology for induction motor drives which features very favorable control performance and implementation properties. However, one of its main deficiencies is the lack of a systematic design procedure for the inverter switching table, which is the core of the control system. This is addressed in this paper, where we propose a novel modelling and control approach for the DTC problem which is based on a systematic design procedure. The DTC drive comprising of a three-level dc-link inverter driving a three-phase induction motor is modelled in the hybrid Mixed Logical Dynamical (MLD) framework, and a constrained optimal control problem is set up and solved over a receding finite horizon using Model Predictive Control (MPC). Simulation results are provided and compared to the current industrial state of the art, which demonstrate the potential for performance improvements.

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% Autogenerated BibTeX entry
@InProceedings { PapGey:2004:IFA_1925,
    author={G. Papafotiou and T. Geyer and M. Morari},
    title={{Optimal Direct Torque Control of Three-Phase Symmetric
	  Induction Motors}},
    booktitle={IEEE Conference on Decision and Control},
    address={Atlantis, Bahamas},
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