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| Study on Gyroscopic Effect of Floating Offshore Wind Turbines | |
| 作者姓名： | CHEN Jia-hao PEI Ai-guo CHEN Peng HU Zhi-qiang |
| 作者单位： | Guangdong Electric Power Design Institute Co.;School of Engineering;College of Shipbuilding Engineering |
| 基金项目： | This study was financially supported by the Guangdong Electric Power Design Institute Co.,Ltd.of China Energy Engineering Group,the R&D projects(Grant No.EV05241W);China Postdoctoral Science Foundation(Grant No.2020M682995). |
| 摘 要： | Compared with bottom-fixed wind turbines,the supporting platform of a floating offshore wind turbine has a larger range of motion,so the gyroscopic effects of the system will be more obvious.In this paper,the mathematical analytic expression of the gyroscopic moment of a floating offshore wind turbine is derived firstly.Then,FAST software is utilized to perform a numerical analysis on the model of a spar-type horizontal axis floating offshore wind turbine,OC3-Hywind,so as to verify the correctness of the theoretical analytical formula and take an investigation on the characteristics of gyroscopic effect.It is found that the gyroscopic moment of the horizontal axis floating offshore wind turbine is essentially caused by the vector change of the rotating rotor,which may be due to the pitch or yaw motion of the floating platform or the yawing motion of the nacelle.When the rotor is rotating,the pitch motion of the platform mainly excites the gyroscopic moment in the rotor’s yaw direction,and the yaw motion of the platform largely excites the rotor’s gyroscopic moment in pitch direction,accordingly.The results show that the gyroscopic moment of the FOWT is roughly linearly related to the rotor’s inertia,the rotor speed,and the angular velocity of the platform motion. |
| 关 键 词： | floating offshore wind turbine gyroscopic effects yaw motion pitch motion numerical analysis |
Study on Gyroscopic Effect of Floating Offshore Wind Turbines |
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| CHEN Jia-hao,PEI Ai-guo,CHEN Peng,HU Zhi-qiang.Study on Gyroscopic Effect of Floating Offshore Wind Turbines[J].China Ocean Engineering,2021,35(2):201-214. | |
| Authors: | Chen Jia-hao Pei Ai-guo Chen Peng Hu Zhi-qiang |
| Institution: | 1.Guangdong Electric Power Design Institute Co., Ltd. of China Energy Engineering Group, Guangzhou, 510663, China ;2.School of Engineering, Newcastle University, Newcastle upon Tyne, NE1 7RU, UK ;3.College of Shipbuilding Engineering, Harbin Engineering University, Harbin, 150001, China ; |
| Abstract: | Compared with bottom-fixed wind turbines, the supporting platform of a floating offshore wind turbine has a larger range of motion, so the gyroscopic effects of the system will be more obvious. In this paper, the mathematical analytic expression of the gyroscopic moment of a floating offshore wind turbine is derived firstly. Then, FAST software is utilized to perform a numerical analysis on the model of a spar-type horizontal axis floating offshore wind turbine, OC3-Hywind, so as to verify the correctness of the theoretical analytical formula and take an investigation on the characteristics of gyroscopic effect. It is found that the gyroscopic moment of the horizontal axis floating offshore wind turbine is essentially caused by the vector change of the rotating rotor, which may be due to the pitch or yaw motion of the floating platform or the yawing motion of the nacelle. When the rotor is rotating, the pitch motion of the platform mainly excites the gyroscopic moment in the rotor's yaw direction, and the yaw motion of the platform largely excites the rotor's gyroscopic moment in pitch direction, accordingly. The results show that the gyroscopic moment of the FOWT is roughly linearly related to the rotor's inertia, the rotor speed, and the angular velocity of the platform motion. |
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