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Article

Comparative Study on the Performances of a Hinged Flap-Type Wave Energy Converter Considering Both Fixed and Floating Bases

by
Mingsheng Chen
1,2,
Qihao Yun
2,
Thiago S. Hallak
3,
Hao Zhou
4,*,
Kai Zhang
4,
Yi Yang
5,
Tao Tao
5,
Shi Liu
5,
Wei Jiang
6 and
Changjie Li
7
1
Key Laboratory of High Performance Ship Technology (Wuhan University of Technology), Ministry of Education, Wuhan 430063, China
2
School of Naval Architecture, Ocean and Energy Power Engineering, Wuhan University of Technology, Wuhan 430063, China
3
Centre for Marine Technology and Ocean Engineering (CENTEC), Instituto Superior Técnico, Universidade de Lisboa, 1649-004 Lisbon, Portugal
4
China Ship Scientific Research Center, Wuxi 210084, China
5
China Southern Power Grid Technology Co., Ltd., Guangzhou 510080, China
6
China Datang Corporation Ltd., Guangdong Branch, Guangzhou 510000, China
7
Guangdong Datang International Chaozhou Power Generation Co., Ltd., Chaozhou 515700, China
*
Author to whom correspondence should be addressed.
J. Mar. Sci. Eng. 2024, 12(8), 1416; https://doi.org/10.3390/jmse12081416
Submission received: 27 July 2024 / Revised: 14 August 2024 / Accepted: 15 August 2024 / Published: 17 August 2024
(This article belongs to the Special Issue Offshore Renewable Energy, Second Edition)
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Abstract

The dynamical modeling and power optimization of floating wind–wave platforms, especially in regard to configurations based on constrained floating multi-body systems, lack in-depth systematic investigation. In this study, a floating wind-flap platform consisting of a flap-type wave energy converter and a floating offshore wind turbine is solved in the frequency domain considering the mechanical and hydrodynamic couplings of floating multi-body geometries and a model that suits the constraints of the hinge connection, which can accurately calculate the frequency domain dynamic response of the flap-type WEC. The results are compared with bottom-fixed flap-type wave energy converters in the absence of coupling with a floating wind platform. Moreover, combined with traditional optimization methods of power take-off systems for wave energy conversion, an optimization method is developed to suit the requirements of floating wind-flap platform configurations. The results are drawn for a specific operation site in the South China Sea, whereas a sensitivity analysis of the parameters is performed. It is found that the floating wind-flap platform has better wave energy absorption performance in the low-frequency range than the bottom-fixed flap-type wave energy converter; the average power generation in the low-frequency range can increase by up to 150 kW, mainly due to constructive hydrodynamic interactions, though it significantly fluctuates from the sea waves’ frequency range to the high-frequency range. Based on spectral analysis, operational results are drawn for irregular sea states, and the expected power for both types of flap-type WECs is around 30 kW, which points to a similar wave energy absorption performance when comparing the bottom-fixed flap with the flap within the hybrid configuration.
Keywords: flap-type WEC; floating wind–wave platforms; hinge constraints; WEC optimization; floating offshore wind turbines flap-type WEC; floating wind–wave platforms; hinge constraints; WEC optimization; floating offshore wind turbines

Share and Cite

MDPI and ACS Style

Chen, M.; Yun, Q.; Hallak, T.S.; Zhou, H.; Zhang, K.; Yang, Y.; Tao, T.; Liu, S.; Jiang, W.; Li, C. Comparative Study on the Performances of a Hinged Flap-Type Wave Energy Converter Considering Both Fixed and Floating Bases. J. Mar. Sci. Eng. 2024, 12, 1416. https://doi.org/10.3390/jmse12081416

AMA Style

Chen M, Yun Q, Hallak TS, Zhou H, Zhang K, Yang Y, Tao T, Liu S, Jiang W, Li C. Comparative Study on the Performances of a Hinged Flap-Type Wave Energy Converter Considering Both Fixed and Floating Bases. Journal of Marine Science and Engineering. 2024; 12(8):1416. https://doi.org/10.3390/jmse12081416

Chicago/Turabian Style

Chen, Mingsheng, Qihao Yun, Thiago S. Hallak, Hao Zhou, Kai Zhang, Yi Yang, Tao Tao, Shi Liu, Wei Jiang, and Changjie Li. 2024. "Comparative Study on the Performances of a Hinged Flap-Type Wave Energy Converter Considering Both Fixed and Floating Bases" Journal of Marine Science and Engineering 12, no. 8: 1416. https://doi.org/10.3390/jmse12081416

APA Style

Chen, M., Yun, Q., Hallak, T. S., Zhou, H., Zhang, K., Yang, Y., Tao, T., Liu, S., Jiang, W., & Li, C. (2024). Comparative Study on the Performances of a Hinged Flap-Type Wave Energy Converter Considering Both Fixed and Floating Bases. Journal of Marine Science and Engineering, 12(8), 1416. https://doi.org/10.3390/jmse12081416

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