0
Research Papers: Ocean Renewable Energy

Dynamic Analysis of a Truss Spar-Type Floating Foundation for 5 MW Vertical-Axis Wind Turbine

[+] Author and Article Information
Liqin Liu

State Key Laboratory of Hydraulic Engineering
Simulation and Safety,
Tianjin University,
Tianjin 300072, China
e-mail: liuliqin@tju.edu.cn

Weichen Jin

State Key Laboratory of Hydraulic Engineering
Simulation and Safety,
Tianjin University,
Tianjin 300072, China
e-mail: blue_sky_jin@126.com

Ying Guo

State Key Laboratory of Hydraulic Engineering
Simulation and Safety,
Tianjin University,
Tianjin 300072, China
e-mail: yynocry@tju.edu.cn

1Corresponding author.

Contributed by the Ocean, Offshore, and Arctic Engineering Division of ASME for publication in the JOURNAL OF OFFSHORE MECHANICS AND ARCTIC ENGINEERING. Manuscript received September 30, 2016; final manuscript received June 12, 2017; published online August 16, 2017. Assoc. Editor: Yin Lu Young.

J. Offshore Mech. Arct. Eng 139(6), 061902 (Aug 16, 2017) (9 pages) Paper No: OMAE-16-1120; doi: 10.1115/1.4037292 History: Received September 30, 2016; Revised June 12, 2017

This paper studies the dynamic characteristic of the truss Spar-type floating foundation used to support the offshore vertical-axis wind turbine (VAWT). The effects of changes in foundation structural parameters on its motions were evaluated. The results show that radius of the buoyancy tank, radius of the upper mechanical tank, interval of the center of gravity and center of buoyancy, and height of the upper mechanical tank have important effects on the heave and pitch motions of the foundation. Two sets of foundation parameters (FS-1 and FS-2) were selected to support the 5 MW Darrieus wind turbine. The motion performances of the two floating VAWTs, S-1 (the VAWT supported by FS-1) and S-2 (the VAWT supported by FS-2), were analyzed and compared. It was observed that the amplitudes of the heave and pitch motions of the floating VAWT depend on the wave loads; the mean values of the heave and pitch motions depend on the aerodynamic loads. The floating VAWT S-2 had better motion performance; its heave and pitch motions were all small. The heave frequencies of the floating VAWT were equal to the wave frequencies. For the pitch frequencies, there is a component of the rotor rotational frequency (0.175 Hz) for cases LC1 to LC4, while the amplitudes of the twice-per-revolution (2P) response are far smaller than the amplitudes of the wave response.

Copyright © 2017 by ASME
Your Session has timed out. Please sign back in to continue.

References

Dominique, R. , and Christian, C. , 2009, “ Wind Float: A Floating Foundation for Offshore Wind Turbines,” ASME Paper No. OMAE2009-79229.
Li, Y. , 2013, “ Status of Large Scale Wind Turbine Technology Development Abroad,” Appl. Math. Mech., 34(10), pp. 1003–1011. http://www.amm.shu.edu.cn/EN/abstract/abstract15019.shtml#
Henderson, A. R. , Witcher, D. , and Morgan, C. A. , 2009, “ Floating Support Structures Enabling New Markets for Offshore Wind Energy,” European Wind Energy Conference and Exhibition (EWEC), Marseille, France, Mar. 16–19, pp. 2153–2164. https://www.researchgate.net/publication/228523769_Floating_support_structures_enabling_new_markets_for_offshore_wind_energy
Robertson, A. N. , and Jonkman, J. M. , 2011, “ Loads Analysis of Several Offshore Floating Wind Turbine Concepts,” International Society of Offshore and Polar Engineers Conference, Maui, HI, June 19–24, pp.443–450. http://www.nrel.gov/docs/fy12osti/50539.pdf
Matha, D. , Fischer, T. , and Kuhn, M. , 2009, “ Model Development and Loads Analysis of a Wind Turbine on a Floating Offshore Tension Leg Platform,” European Offshore Wind Conference and Exhibition, Stockholm, Sweden, Sept.14–16, Paper No. NREL/CP-500-46725. http://wind.nrel.gov/public/jjonkman/floatingwindpapers/matha_fischer_kuhn_jonkman_modeldevelopmentandloadsanalysisofawindturbineonafloatingoffshoretensionlegplatform_nrel-46725_2010.pdf
Duan, F. , Hu, Z. Q. , and Niedzwecki, J. , 2016, “ Model Test Investigation of a Spar Floating Wind Turbine,” Mar. Struct., 49, pp. 76–96. [CrossRef]
Nielsen, F. G. , Hanson, T. D. , and Kaare, B. , 2006, “ Integrated Dynamic Analysis of Floating Offshore Wind Turbines,” ASME Paper No. OMAE 2006-92291.
Jonkman, J. , and Buhl, M. , 2007, “ Loads Analysis of a Floating Offshore Wind Turbine Using Fully Coupled Simulation,” Wind Power Conference and Exhibition, Los Angeles, CA, June 3–6, Paper No. NREL/CP-500-41714. http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.118.7868&rep=rep1&type=pdf
Masciola, M. , Robertson, A. , and Jonkman, J. , 2011, “ Investigation of a Fast-Orcaflex Coupling Module for Integrating Turbine and Mooring Dynamics of Offshore Floating Wind Turbines,” International Conference on Offshore Wind Energy and Ocean Energy, Beijing, China, Oct. 31–Nov. 2, Paper No. NREL/CP-5000-52896. http://citeseerx.ist.psu.edu/viewdoc/download;jsessionid=7185B34B964FB0E0A07B6EAA6A5263AD?doi=10.1.1.476.74&rep=rep1&type=pdf
Willy, T. , Tjukup, M. , and Sohif, M. , 2015, “ Darrieus Vertical Axis Wind Turbine for Power Generation II: Challenges in HAWT and the Opportunity of Multi-Megawatt Darrieus VAWT Development,” Renewable Energy, 75, pp. 560–571. [CrossRef]
Vita, L. , Friis Pedersen, T. , and Aagaard Madsen, H. , 2011, “ Offshore Vertical Axis Wind Turbine With Floating and Rotating Platform,” Ph.D. thesis, Technical University of Denmark, Copenhagen, Denmark. http://orbit.dtu.dk/files/6540980/PhD_Thesis_Vita.pdf
Borg, M. , and Collu, M. , 2014, “ A Comparison on the Dynamics of a Floating Vertical Axis Wind Turbine on Three Different Floating Support Structures,” Energy Proc., 53, pp. 268–279. [CrossRef]
Owens, B. C. , Hurtado, J. E. , and Paquette, J. A. , 2013, “ Aeroelastic Modeling of Large Off-Shore Vertical-Axis Wind Turbines: Development of the Offshore Wind Energy Simulation Toolkit,” AIAA Paper No. 2013-1552.
Cheng, Z. S. , Wang, K. , and Gao, Z. , 2015, “ Dynamic Response Analysis of Three Floating Wind Turbine Concepts With a Two-Bladed Darrieus Rotor,” J. Ocean Wind Energy, 2(4), pp. 213–222. [CrossRef]
Collu, M. , Borg, M. , and Manuel, L. , 2016, “ On the Relative Importance of Loads Acting on a Floating Vertical Axis Wind Turbine System When Evaluating the Global System Response,” ASME Paper No. OMAE2016-54628.
Pan, Z. Y. , Vada, T. , and Finne, S. , 2016, “ Benchmark Study of Numerical Approaches for Wave-Current Interaction Problem of Offshore Floaters,” ASME Paper No. OMAE2016-54411.
Faltinsen, O. M. , 1990, Sea Loads on Ships and Offshore Structures, Cambridge University Press, Cambridge, UK.
Roddier, D. , Peiffer, A. , Aubault, A. , and Weinstein, J. , 2011, “ A Generic 5MW Wind Float for Numerical Tool Validation and Comparison Against a Generic Spar,” ASME Paper No. OMAE 2011-50278.
Huang, L. , Liu, L. Q. , and Liu, C. Y. , 2015, “ The Nonlinear Bifurcation and Chaos of Coupled Heave and Pitch Motions of a Truss Spar Platform,” J. Ocean Univ. China, 14(5), pp. 795–802. [CrossRef]
Liu, L. Q. , Zhou, B. , and Tang, Y. G. , 2014, “ Study on the Nonlinear Dynamical Behavior of Deepsea Spar Platform by Numerical Simulation and Model Experiment,” J. Vib. Control, 20(10), pp. 1528–1553. [CrossRef]
Templin, R. J. , 1974, “ Aerodynamic Performance Theory for the NRC Vertical-Axis Wind Turbine,” National Aero-Nautical Establishment, Ottawa, ON, Canada, Report No. LTR-LA-160. http://adsabs.harvard.edu/abs/1974STIN...7616618T
Stricktand, J. H. , 1975, “ The Darrieus Turbine: A Performance Prediction Model Using Multiple Streamtubes,” Sandia National Laboratories, Albuquerque, NM, Report No. SAND74-0431. http://windpower.sandia.gov/abstracts/750431A.pdf
Paraschivoiu, I. , 2002, Wind Turbine Design With Emphasis on Darrieus Concept, Presses Internationals Polytechnique, Montreal, QC, Canada.
Liu, L. Q. , Guo, Y. , Zhao, H. X. , and Tang, Y. G. , 2017, “ Dynamic Modeling, Simulation and Model Tests Research on the Floating Vawt,” Chinese J. Theo. Appl. Mech., 49(2), pp. 299–307 (in Chinese).
Berg, D.-E. , 1983, “ Improved Double-Multiple Stream Tube Model for the Darrieus Type Vertical-Axis Wind Turbine,” American Solar Energy Society Meeting, Minneapolis, MN, June 1, pp. 231–233. http://adsabs.harvard.edu/abs/1983ases.meet.....B
API, 2000, “ API 2A-WSD Recommended Practice for Planning, Designing and Constructing Fixed Offshore Platforms-Working Stress Design,” American Petroleum Institute, Washington, DC.
Qiu, Y. , 2016, “ Research on Response of Motion of Vertical Axis Wind Turbine With Spar Floating,” M.S. thesis, Tianjin University, Tianjin, China.

Figures

Grahic Jump Location
Fig. 1

The floating VAWT: (1) blades, (2) tower, (3) upper buoyancy tank, (4) upper mechanical tank, (5) truss structure, (6) heaving plate, and (7) bottom ballast tank

Grahic Jump Location
Fig. 2

Diagram of the floating foundation

Grahic Jump Location
Fig. 3

Hydrodynamic calculation models: (a) panel model and (b) Morison model

Grahic Jump Location
Fig. 4

Analysis of BG¯: (a) max RAOs and (b) natural periods

Grahic Jump Location
Fig. 5

Analysis of R1: (a) max RAOs and (b) natural periods

Grahic Jump Location
Fig. 6

Analysis of R2: (a) max RAOs and (b) natural periods

Grahic Jump Location
Fig. 7

Analysis of H1: (a) max RAOs and (b) natural periods

Grahic Jump Location
Fig. 8

Analysis of L1: (a) max RAOs and (b) natural periods

Grahic Jump Location
Fig. 9

Analysis of H2: (a) max RAOs and (b) natural periods

Grahic Jump Location
Fig. 10

Analysis of the heave of the floating foundation: (a) variations of max RAOs and (b) variations of natural period

Grahic Jump Location
Fig. 11

Analysis of the pitch of the floating foundation: (a) variations of max RAOs and (b) variations of natural period

Grahic Jump Location
Fig. 12

Heave motions of the floating VAWT

Grahic Jump Location
Fig. 13

Pitch motions of the floating VAWT

Grahic Jump Location
Fig. 14

Heave spectrums of the floating VAWT

Grahic Jump Location
Fig. 15

Pitch spectrums of the floating VAWT

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In