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Comparisons of dynamical characteristics of a 5 MW floating wind turbine supported by a spar-buoy and a semi-submersible using model testing methods

Lookup NU author(s): Professor Zhiqiang Hu



This is the authors' accepted manuscript of an article that has been published in its final definitive form by American Institute of Physics, 2018.

For re-use rights please refer to the publisher's terms and conditions.


Development of the floating offshore wind turbine technology is in need of more scaled model tests to investigate its dynamic characteristics. This paper presents the model testing investigations of a 5MW floating wind turbine supported by the spar-buoy and the semi-submersible, and conducts a series of comparisons on the experimental results of the two floating wind turbines. It is found that the spar-buoy floating wind turbine is more sensitive to the wind loading and has greater platform motion amplitudes, especially for the yaw motion. By contrast, the semi-submersible floating wind turbine is more sensitive to the wave loading, especially for the second-order different frequency wave loading. In addition, the dynamic responses of the two floating wind turbines are both influenced by the current flow. Compared to the semi-submersible floating wind turbine, the more regular “figure-eight” surge-sway trajectory is observed in the spar-type floating wind turbines, showing the influence from vortex-induced-motion phenomenon. The paper provides more valuable experimental details and results to the scientific community with regard to the spar-buoy and semi-submersible floating wind turbines. Moreover, the comparisons of the dynamic behaviours of the two floating wind turbines in various conditions help to understand the characteristics and mechanism about the floating wind turbine technology.

Publication metadata

Author(s): Chen J, Hu Z, Duan F

Publication type: Article

Publication status: Published

Journal: Journal of Renewable and Sustainable Energy

Year: 2018

Volume: 10

Issue: 5

Online publication date: 19/10/2018

Acceptance date: 11/09/2018

Date deposited: 24/10/2018

ISSN (electronic): 1941-7012

Publisher: American Institute of Physics


DOI: 10.1063/1.5048384


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