Active mass damper vibration control of offshore wind turbine structure considering RNA operation

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Journal of Vibration and Shock ›› 2023, Vol. 42 ›› Issue (23) : 183-191.

BAI Jiulin1,2,LI Chenhui3,WANG Yuhang1,2

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Abstract

Due to the nonlinear control strategy of the wind turbine-nacelle assembly (RNA) in the upper part of the wind turbine, the acceleration response characteristics of the wind turbine tower top are complex, among which the 3-fold rotational excitation (3P) response of the wind turbine is the most prominent. This paper considered a single-degree-of-freedom equivalent wind turbine tower model, determined the structural dynamic parameters and input aerodynamic loads under RNA operation by OpenFAST, and carried out the control of wind turbine top for-aft acceleration response by Active Mass Damper (AMD) based on Linear Quadratic Regulator (LQR) algorithm. The damping performance and control characteristics of AMD were investigated in comparison with the passive tuned mass damper (TMD). The results show that AMD has better control performance than TMD under the action of RNA operation, and its control action can suppress the response of 3P band to some extent.

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Vibration control / wind turbine structure / Active Mass Dampers / RNA operation.

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BAI Jiulin1,2,LI Chenhui3,WANG Yuhang1,2. Active mass damper vibration control of offshore wind turbine structure considering RNA operation[J]. Journal of Vibration and Shock, 2023, 42(23): 183-191

References

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