抑制海上浮式风力机振动的TMD限位策略研究

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Abstract The tuned mass damper (TMD) could effectively reduce the vibration responses of floating offshore wind turbines. In wind-wave loads, the TMD would appear a large amplitude and collide with wind turbines, which perhaps affect the safety of the wind turbine structure. Therefore, a TMD limiter should be designed to solve these problems. A TMD was installed in the nacelle of the barge floating wind turbine, and three kinds of TMD limited position strategies, which are the damping limited position, stiffness limited position and joint limited position, were presented. Considering the TMD stroke constraint, a three-degree-of-freedom coupled model of the wind turbine and TMD was established using the Lagrange’s equations. Subsequently, the vibration suppression effects of the nacelle TMD were studied in different limited position strategies. The results show that the joint limited position strategy could avoid the defects of the other strategies, the maximum TMD stroke is 7.85m; the suppression rates of the standard deviation for the tower top longitudinal displacement and platform pitch angle are 40.01% and 61.78%, respectively.

Key words： floating offshore wind turbines TMD Lagrange’s equations dynamic model vibration control limited position strategy

Received: 08 May 2019 Published: 28 July 2020

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	YANG Jiajia
	HE Erming
	YAO Wenxu
	XIONG Bo

Cite this article:

YANG Jiajia,HE Erming,YAO Wenxu, et al. TMD limited position strategy for vibration suppression of floating offshore wind turbines[J]. JOURNAL OF VIBRATION AND SHOCK, 2020, 39(15): 18-24.

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http://jvs.sjtu.edu.cn/EN/ OR http://jvs.sjtu.edu.cn/EN/Y2020/V39/I15/18

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