• A comparative study on dynamic responses of spar-type floating horizontal and vertical axis wind turbines 

      Cheng, Zhengshun; Wang, Kai; Gao, Zhen; Moan, Torgeir (Journal article; Peer reviewed, 2017)
      Interest in the exploitation of offshore wind resources using floating wind turbines has increased. Commercial development of floating horizontal axis wind turbines (FHAWTs) is emerging because of their commercial success ...
    • Assessment of performance enhancement of a semi-submersible vertical axis wind turbine with an optimized Darrieus rotor 

      Cheng, Zhengshun; Wang, Kai; Ong, Muk Chen (Journal article; Peer reviewed, 2018)
      Increasing efforts are currently being devoted to develop floating vertical axis wind turbines (VAWTs), due to their potential to reduce the cost-of-energy. Optimization of rotors is favorable to increase the power capture ...
    • Dynamic analysis of a floating vertical axis wind turbine under emergency shutdown using hydrodynamic brake 

      Wang, Kai; Hansen, Martin Otto Laver; Moan, Torgeir (Journal article; Peer reviewed, 2014)
      Emergency shutdown is always a challenge for an operating vertical axis wind turbine. A 5-MW vertical axis wind turbine with a Darrieus rotor mounted on a semi-submersible support structure was examined in this study. ...
    • Dynamic Modelling and Analysis of Three Floating Wind Turbine Concepts with Vertical Axis Rotor 

      Cheng, Zhengshun; Wang, Kai; Gao, Zhen; Moan, Torgeir (Proceedings of the twenty-fifth International Ocean and Polar Engineering Conference;ISOPE 2015, Chapter; Conference object; Peer reviewed, 2015)
      Recently there is an increasing interest in the development of offshore floating vertical axis wind turbines (FVAWTs). A FVAWT mounted on a semi-submersible has been proposed by several researchers, and a FVAWT with a spar ...
    • Dynamic Response Analysis of Three Floating Wind Turbine Concepts with a Two-Bladed Darrieus Rotor 

      Cheng, Zhengshun; Wang, Kai; Gao, Zhen; Moan, Torgeir (Journal article; Peer reviewed, 2015)
      Recently, interest in the development of floating vertical axis wind turbines (FVAWTs) has been increasing, since FVAWTs might prove to be one of the optimal configurations in deep waters. In this study, a FVAWT with a 5 ...
    • Modelling and dynamic analysis of a semi-submersible floating vertical axis wind turbine 

      Wang, Kai (Doctoral thesis at NTNU;2015:89, Doctoral thesis, 2015)
      Wind turbines are mainly classified into horizontal axis wind turbines (HAWTs) and vertical axis wind turbines (VAWTs) based on different orientation of their axis of rotation. Ever-increasing demand for energy boosts ...
    • Pistachio‐Shuck‐Like MoSe2/C Core/Shell Nanostructures for High‐Performance Potassium‐Ion Storage 

      Wang, Wei; Jiang, Bo; Qian, Chang; Lv, Fan; Feng, Jianrui; Zhou, Jinhui; Wang, Kai; Yang, Chao; Yang, Yong; Guo, Shaojun (Journal article; Peer reviewed, 2018)
      Potassium‐ion batteries (KIBs) have recently attracted intensive attention because of the abundant potassium resources and their low cost and high safety. However, the major challenge faced by KIBs lies in the lack of ...
    • Power performance and dynamic responses of a combined floating vertical axis wind turbine and wave energy converter concept 

      Cheng, Zhengshun; Wen, Ting-Rui; Ong, Muk Chen; Wang, Kai (Journal article; Peer reviewed, 2019)
      Currently, the development of floating wind turbines and wave energy converters (WECs) is both facing the challenge of high cost-of-energy (CoE). A promising way to reduce the CoE is to employ combined wind and wave energy ...
    • Spar-type vertical-axis wind turbines in moderate water depth: A feasibility study 

      Wen, Ting-Rui; Wang, Kai; Cheng, Zhengshun; Ong, Muk Chen (Journal article; Peer reviewed, 2018)
      The applications of floating vertical-axis wind turbines (VAWTs) in deep water have been proposed and studied by several researchers recently. However, the feasibility of deploying a floating VAWT at a moderate water depth ...
    • Validation of Numerical Models of the Offshore Wind Turbine From the Alpha Ventus Wind Farm Against Full-Scale Measurements Within OC5 Phase III 

      Popko, Wojciech; Robertson, Amy; Jonkman, Jason; Wendt, Fabian; Thomas, Philipp; Müller, Kolja; Kretschmer, Matthias L.; Hagen, Torbjørn Ruud; Galinos, Christos; Dreff, Jean-Baptiste Le; Gilbert, Philippe; Auriac, Bertrand; Oh, Sho; Qvist, Jacob; Sørum, Stian Høegh; Suja, Loup; Shin, Hyunkyoung; Molins, Climent; Trubat, Pau; Bonnet, Paul; Bergua, Roger; Wang, Kai; Fu, Pengcheng; Cai, Jifeng; Cai, Zhisong; Alexandre, Armando; Harries, Robert (Peer reviewed; Journal article, 2020)
      The main objective of the Offshore Code Comparison Collaboration Continuation, with Correlation (OC5) project is validation of aero-hydro-servo-elastic simulation tools for offshore wind turbines (OWTs) through comparison ...
    • Validation of Numerical Models of the Offshore Wind Turbine From the Alpha Ventus Wind Farm Against Full-Scale Measurements Within OC5 Phase III 

      Popko, Wojciech; Robertson, Amy; Jonkman, Jason; Wendt, Fabian; Thomas, Philipp; Müller, Kolja; Kretschmer, Matthias L.; Hagen, Torbjørn Ruud; Galinos, Christos; Dreff, Jean-Baptiste Le; Gilbert, Philippe; Auriac, Bertrand; Oh, Sho; Qvist, Jacob; Sørum, Stian Høegh; Suja, Loup; Shin, Hyunkyoung; Molins, Climent; Trubat, Pau; Bonnet, Paul; Bergua, Roger; Wang, Kai; Fu, Pengcheng; Cai, Jifeng; Cai, Zhisong; Alexandre, Armando; Harries, Robert (Chapter, 2019)
      The main objective of the Offshore Code Comparison Collaboration Continuation, with Correlation (OC5) project is validation of aero-hydro-servo-elastic simulation tools for offshore wind turbines (OWTs) through comparison ...
    • Verification of Numerical Offshore Wind Turbine Models Based on Full Scale Alpha Ventus Data within OC5 Phase III 

      Popko, Wojciech; Huhn, Matthias L.; Robertson, Amy N.; Jonkman, Jason M.; Wendt, Fabian; Müller, Kolja; Kretschmer, Matthias L.; Vorpahl, Fabian; Hagen, Torbjørn Ruud; Galinos, Christos; Dreff, Jean-Baptiste Le; Gilbert, Philippe; Auriac, Bertrand; Villora, Francisco Navarro; Schünemann, Paul; Bayati, Ilmas; Oh, Sho; Totsuka, Yoshitaka; Qvist, Jacob; Bachynski, Erin Elizabeth; Sørum, Stian Høegh; Thomassen, Paul Edgar; Shin, Hyun Kyoung; Vittori, Felipe; Galvan, Josean; Molins, Climent; Bonnet, Paul; Zee, Tjeerd van der; Bergua, Roger; Wang, Kai; Fu, Pengcheng; Cai, Jifeng (Chapter, 2018)
      The main objective of the Offshore Code Comparison Collaboration Continuation, with Correlation (OC5) project, is validation of aero-hydro-servo-elastic simulation tools for offshore wind turbines (OWTs) through comparison ...