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Improved Super Twisting Based High Order Direct Power Sliding Mode Control of a Connected DFIG Variable Speed Wind Turbine

Abstract : This work presents the theoretical and practical comparison of linear and nonlinear control laws for the direct power control of a gridconnected double fed induction generator (DFIG), based wind energy conversion system (WECS) under different operating modes. We will show the improvement brought by the super twisting based high order sliding mode control to mitigate the chattering phenomenon, due to the high switching frequency. It will also avoid the hyperlink of the controller settings to the system's mathematical model and will reduce the sensibility to external disturbances. The overall structure of the proposed control requires the use of the DFIG simplified model with field-oriented control (FOC). This last allows an instantaneous decoupled control of the DFIG stator active and reactive power by acting on dq rotor currents (I qr , I dr) respectively. In the preliminary tests, a comparative study is conducted to verify the superior performance of the proposed WECS control scheme during various operating modes including the maximum power point tracking MPPT mode. The study reveals the effectiveness of each implemented control law with its advantages and drawbacks.
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https://hal.univ-lorraine.fr/hal-03386452
Contributor : Lotfi Baghli Connect in order to contact the contributor
Submitted on : Tuesday, October 19, 2021 - 8:23:01 PM
Last modification on : Friday, December 3, 2021 - 4:53:41 PM

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Zouheyr Dekali, Lotfi Baghli, Abdelmadjid Boumediene. Improved Super Twisting Based High Order Direct Power Sliding Mode Control of a Connected DFIG Variable Speed Wind Turbine. Periodica Polytechnica Electrical Engineering and Computer Science, 2021, ⟨10.3311/ppee.17989⟩. ⟨hal-03386452⟩

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