Frequency and Time Domain Simulations of a 15 MW Floating Wind Turbine Integrating with Multiple Flap-Type WECs

Yi Yang, Chenyu Liang, Shi Liu, Jiale Jiang, Zheng Huang, Chonggan Liang, Wenjun Ou, Tao Tao and Mingsheng Chen ()
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Yi Yang: China Southern Power Grid Technology Co., Ltd., Guangzhou 510080, China
Chenyu Liang: School of Naval Architecture, Ocean and Energy Power Engineering, Wuhan University of Technology, Wuhan 430063, China
Shi Liu: China Southern Power Grid Technology Co., Ltd., Guangzhou 510080, China
Jiale Jiang: School of Naval Architecture, Ocean and Energy Power Engineering, Wuhan University of Technology, Wuhan 430063, China
Zheng Huang: China Southern Power Grid Technology Co., Ltd., Guangzhou 510080, China
Chonggan Liang: China Southern Power Grid Technology Co., Ltd., Guangzhou 510080, China
Wenjun Ou: China Southern Power Grid Technology Co., Ltd., Guangzhou 510080, China
Tao Tao: China Southern Power Grid Technology Co., Ltd., Guangzhou 510080, China
Mingsheng Chen: School of Naval Architecture, Ocean and Energy Power Engineering, Wuhan University of Technology, Wuhan 430063, China

Sustainability, 2025, vol. 17, issue 6, 1-28

Abstract: This study integrates offshore wind power and wave power generation technologies to build a multi-energy complementary renewable energy system, which provides references for marine clean energy development and is highly consistent with the global sustainable development goals. The platform consists of a UMaine VolturnUS-S semi-submersible platform and a group of flap-type wave energy converters. A 15 MW wind turbine is installed on the platform. The hydrodynamic model is established using AQWA. Combined with the upper wind load, the fully coupled time domain model of the integrated power generation platform is constructed using the open-source software F2A. The main purpose is to optimize the parameters of the flap-type wave energy device through frequency domain hydrodynamic analysis and then explore the influence of the wave energy device on the platform under the combined action of regular waves and turbulent wind through a series of working conditions. The results show that when the PTO stiffness is 8 × 10 7 N·m/rad, the PTO damping takes the optimal damping and has a higher power generation capacity. Secondly, the coupled wave energy device induces minimal hydrodynamic interference between multiple bodies, resulting in negligible impact on the natural frequency of the wind-wave combined platform motion. Overall, the wave energy device can effectively suppress the freedom of shaking degree of the floating wind-wave combined platform.

Keywords: semi-submersible platform; flap-type wave energy converter; PTO optimization; wind-wave integrated power generation; renewable energy system (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2025
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