Influence of different pitch control on floating characteristics of offshore wind turbine

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Journal of Vibration and Shock ›› 2019, Vol. 38 ›› Issue (12) : 191-198.

Yu Wan1, Ding Qinwei1, Li Chun1, 2, Hao Wenxing1, Zhou Hongjie1, Zhu Haitian1, Han Zhiwei1

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Abstract

The pitch operation of offshore wind turbine blades affects the dynamic response of the supporting platform, namely the floating stability of the offshore wind turbine.However, the floating stability of the offshore wind turbine is an important factor in its ability to exploit wind energy in the deep sea.Therefore, disturbance accommodating control (DAC) was established in the open source software FAST and the Matlab / Simulink co-simulation platform, and compared with the original control strategy of FAST to study the influence of different controllers on the floating characteristics of offshore wind turbines.The result show that: Compared with the FAST control strategy, DAC has better control effect on offshore wind turbines, which aggravate the dynamic response of offshore wind turbines.The influence of different control strategies on the floating characteristics of offshore wind turbines mainly lies in the direction of surge and pitch.In the design of pitch control strategy of offshore wind turbine, the natural frequency in pitch direction should be avoided firstly to improve the floating stability of offshore wind turbine.The results provide a theoretical basis for designing a pitch controller that is more suitable for offshore wind turbines.

Key words

offshore wind turbine / Spar platform / floating stability / dynamic response / disturbance accommodating control

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Yu Wan1, Ding Qinwei1, Li Chun1, 2, Hao Wenxing1, Zhou Hongjie1, Zhu Haitian1, Han Zhiwei1. Influence of different pitch control on floating characteristics of offshore wind turbine[J]. Journal of Vibration and Shock, 2019, 38(12): 191-198

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