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Robust Control of Variable-Speed Wind Turbines Based on an Aerodynamic Torque Observer

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3 Author(s)
Corradini, M.L. ; Scuola di Sci. e Tecnol., Univ. di Camerino, Camerino, Italy ; Ippoliti, G. ; Orlando, G.

This paper focuses on a robust power generation control strategy for a variable-speed wind energy conversion system based on a permanent magnet synchronous generator. The proposed control strategy combines a robust observer of the aerodynamic torque with a sliding mode-based field-oriented control strategy. The robust vanishing of the observation error and the tracking error is proved. Reported numerical simulations show that the proposed control policy is effective in terms of optimal power extraction and it is robust with respect to uncertainties affecting the system.

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Control Systems Technology, IEEE Transactions on  (Volume:21 ,  Issue: 4 )