Current status of phase vi floating design
Download
1 / 7

Current Status of Phase VI Floating Design - PowerPoint PPT Presentation


  • 89 Views
  • Uploaded on

Current Status of Phase VI Floating Design. IEA Wind Task 30 Kick-Off Meeting June 8, 2010 Jason Jonkman, Ph.D. Senior Engineer, NREL. Operated for the U.S. Department of Energy Office of Energy Efficiency and Renewable Energy by the Alliance for Sustainable Energy, LLC.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Current Status of Phase VI Floating Design' - fola


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
Current status of phase vi floating design l.jpg

Current Status ofPhase VI Floating Design

IEA Wind Task 30Kick-Off Meeting

June 8, 2010

Jason Jonkman, Ph.D.

Senior Engineer, NREL

Operated for the U.S. Department of Energy Office of Energy Efficiency and Renewable Energy by the Alliance for Sustainable Energy, LLC


Slide2 l.jpg

Phase VI Floater Concept

  • TLP & semi-submersible were both suggested candidates for Phase VI

  • More interest in semi-submersible b/c:

    • Greater system motions & couplings

    • Importance of hydrodynamic radiation & diffraction

    • Catenary moorings

    • Principle Power Inc. (PPI) has kindly agreed to design a semi-submersible, based on the WindFloat, & make it available to Task 30 participants

Spar Concept by SWAY


Slide3 l.jpg

WindFloat Key Design Features

  • WindFloat by PPI, USA

  • Designed to support existing WTs:

    • Modifications only to tower & controller

  • Pitch & roll restoring through waterplane area & fixed water ballast

  • Tower mounted on one column

  • Active ballast system maintains zero-mean pitch angle

  • Heave plates improve natural response periods & damping

Spar Concept by SWAY

WindFloat (Image: D. Roddier, PPI)


Slide4 l.jpg

Original Design Plan by PPI

  • Tower would be moved to center:

    • Simplify system’s asymmetry

    • Avoid issues associated with shift in origin

  • Heave plates would be eliminated by compensating with larger columns:

    • Heave plates require empirically derived drag

    • Heave plate IP protected by PPI

  • However, design iteration revealed:

    • Tower in center requires a lot of extra support structure

    • Columns would have to be unreasonably large to achieve desired response periods

Spar Concept by SWAY

Semi-Submersible Concept

(Image: D. Roddier, PPI)


Slide5 l.jpg

Current Design Plan by PPI

  • Keep tower on one column

  • Keep heave plates:

    • PPI will supply suitable drag properties

  • Platform will support NREL 5-MW WT

  • Aiming for response periods similar to that of OC3-Hywind spar buoy

  • Scaled system will be tested in a wave tank within DeepCWind project:

    • Data will become available for model validation

  • Design status:

    • Design iteration in progress

    • Developing specifications report

    • Expected completion in Summer, 2010

Semi-Submersible Concept

(Image: D. Roddier, PPI)

Spar Concept by SWAY


Slide6 l.jpg

Preliminary Design Details

Spar Concept by SWAY


Thank you for your attention l.jpg

Thank You for Your Attention

Jason Jonkman, Ph.D.

+1 (303) 384 – 7026

jason.jonkman@nrel.gov

Operated for the U.S. Department of Energy Office of Energy Efficiency and Renewable Energy by the Alliance for Sustainable Energy, LLC