Article
Engineering, Marine
Rongxin Wang, Xiaomei Xu, Zheguang Zou, Longfei Huang, Yi Tao
Summary: An adaptive stochastic resonance method is proposed to extract the dominant frequency of wind turbine operational sound in the presence of heavy noise. The results from simulation and field data demonstrate the effectiveness of the method and its high correlation with wind turbine rotor speed.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2022)
Review
Energy & Fuels
Mohammad Barooni, Turaj Ashuri, Deniz Velioglu Sogut, Stephen Wood, Shiva Ghaderpour Taleghani
Summary: Offshore wind energy has gained popularity due to its stronger wind power compared to onshore wind energy. Floating structures have enabled wind turbines to be deployed in deeper or more complicated seabed locations. The deployment of floating wind turbines in deep waters is advantageous in terms of steadier winds, reduced visual impact, and flexible noise requirements. Understanding the physics, design principles, and analysis methods of floating offshore wind turbines is necessary to compete with traditional energy sources. This study provides a comprehensive review of recent developments in offshore wind turbine technology, covering aerodynamics, hydromechanics, mooring, ice, and inertial loads.
Article
Environmental Sciences
Young Geul Yoon, Dong-Gyun Han, Jee Woong Choi
Summary: As interest in renewable energy development grows, numerous offshore wind farms are being constructed worldwide. Consequently, the potential effects of underwater operational noise on marine ecosystems have become a concern, necessitating an understanding of the mechanisms and acoustic characteristics of such noise for environmental impact assessments.
FRONTIERS IN MARINE SCIENCE
(2023)
Review
Green & Sustainable Science & Technology
Javier Lopez-Queija, Eider Robles, Josu Jugo, Santiago Alonso-Quesada
Summary: This paper provides a critical review of the current state-of-the-art in floating wind turbine control technologies, discussing the advantages and drawbacks of the most commonly used control algorithms and summarizing future research trends.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2022)
Article
Engineering, Marine
Francesco Arcigni, K. A. Abhinav, Maurizio Collu, Mauro Venturini
Summary: This study demonstrates that the thickness and roughness of marine growth significantly impact the loads and dynamic response of wind turbine structures, with changes in marine growth thickness leading to substantial differences in results. The study also shows that tower top displacement increases by 24% when marine growth thickness grows from 0 to 200 mm, while changes in the natural frequencies of the support structure with an increase in marine growth thickness are almost negligible (0.3%).
Review
Green & Sustainable Science & Technology
N. Y. Sergiienko, L. S. P. da Silva, E. E. Bachynski-Polic, B. S. Cazzolato, M. Arjomandi, B. Ding
Summary: The wind energy industry is shifting towards offshore installations, allowing for larger wind turbines to be deployed in deep-water regions with higher and steadier wind speeds. This article provides an overview of the trends in wind energy systems for offshore applications, reviews existing semi-submersible platforms, and analyzes techniques proposed to upscale floating support structures for larger wind energy systems, with a focus on system dynamics.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2022)
Article
Environmental Sciences
Long-Fei Huang, Xiao-Mei Xu, Liang-Liang Yang, Shen-Qin Huang, Xin-Hai Zhang, Yang-Liang Zhou
Summary: This study investigates the underwater noises generated during offshore exploratory drilling (OED) at the Xiamen port. The results show that hammering noise is an impulsive sound with a dominant frequency below 10 kHz, while vibrating and drilling noises are non-impulsive sounds with fundamental frequencies of 41 Hz and 45 Hz, respectively. The impact assessment on marine mammals reveals that hammering noise poses a high risk of hearing damage up to 300 meters for certain groups, while drilling noise only causes damage within approximately 40 meters. It is recommended to establish a warning zone with a radius of 1.9 km during OED construction.
FRONTIERS IN MARINE SCIENCE
(2023)
Review
Energy & Fuels
Alexandre Mathern, Christoph von der Haar, Steffen Marx
Summary: The paper discusses the challenges and future trends of using concrete as support structures for future offshore wind projects, highlighting how new technologies can reduce costs, simplify transportation, and installation, and anticipates an increase in the use of concrete support structures in future offshore wind installations.
Article
Green & Sustainable Science & Technology
Sung-ho Hur
Summary: A new control strategy of sharing controllers/converters for wind turbines is proposed to improve reliability and energy yield, especially for offshore wind turbines. The Matlab/Simulink model is utilized for simulation of each turbine, as well as for simulating clusters of multiple turbines.
Review
Green & Sustainable Science & Technology
Zhiyu Jiang
Summary: This paper reviews the technical aspects of offshore wind turbine installation, covering classification, methods, challenges, and future developments in the field.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2021)
Article
Engineering, Marine
Jianhong Zhang, Hao Wang
Summary: The Chinese government has committed to peak carbon dioxide emissions before 2030 and achieve carbon neutrality before 2060 to address climate change. This paper reviews the development of offshore wind power and foundation technology used for offshore wind turbines in China, highlighting the country's abundant offshore wind resources and the role of renewable energy in reducing greenhouse gas emissions.
Article
Multidisciplinary Sciences
Jannis Langer, Sergio Simanjuntak, Stefan Pfenninger, Antonio Jarquin Laguna, George Lavidas, Henk Polinder, Jaco Quist, Harkunti Pertiwi Rahayu, Kornelis Blok
Summary: The current focus of the offshore wind industry and academia is mainly on regions with strong winds, neglecting areas with mild wind resources. However, research shows that even in areas with mild wind resources, significant electricity generation can be economically achieved using low-wind-speed turbines, especially in regions with high electricity prices. Indonesia's offshore wind potential serves as an example of a mild-resource area with vast marine areas and high electricity prices, highlighting the importance of prioritizing the development of low-wind-speed turbines.
Article
Engineering, Marine
Mikel Serrano-Antonanazas, Jesus-Enrique Sierra-Garcia, Matilde Santos, Maria Tomas-Rodriguez
Summary: Compared to onshore turbines, floating offshore wind turbines have advantages but also face challenges in terms of vibration and lifespan. This study proposes a general method to automatically study the relationship between vibration frequencies and the degrees of freedom of turbines, aiming to facilitate the design of structural control systems.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2023)
Article
Engineering, Marine
He Li, Weiwen Peng, Cheng-Geng Huang, C. Guedes Soares
Summary: This study performs a detailed analysis of failure and maintenance records from various onshore wind farms, aiming to support the failure identification, prevention, and maintenance management of wind turbines. A data correction approach is proposed to transfer the onshore data to floating offshore turbines based on the differences in failure occurrences.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2022)
Article
Engineering, Marine
Patrick Connolly, Curran Crawford
Summary: The research focuses on a new concept of un-moored floating offshore wind turbines (UFOWT) with bottom-mounted thrusters for station-keeping, showing significant power loss. Model predictions suggest that moving upwind or downwind can improve power generation efficiency, and optimal vessel speed and direction are highly sensitive to system design parameters.