Mobile Offshore Platform for Wind Turbine Power Generation

Award Information
Agency: Department of Defense
Branch: Defense Advanced Research Projects Agency
Contract: W31P4Q-09-C-0253
Agency Tracking Number: 08SB2-0849
Amount: $98,969.00
Phase: Phase I
Program: SBIR
Awards Year: 2009
Solicitation Year: 2008
Solicitation Topic Code: SB082-056
Solicitation Number: 2008.2
Small Business Information
475 Bridge Street, Suite 100, Groton, CT, 06340
DUNS: 112716357
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Benjamin Connell
 Principal Scientist
 (860) 448-3253
Business Contact
 David Horne
Title: Sr Vice President/CFO
Phone: (860) 448-3253
Research Institution
There is a Department of Defense need for a persistent, mobile power generating capability to service offshore bases and other temporary or mobile installations. In order to facilitate both persistence and mobility, the present concept is of a free floating wind turbine platform, convertible from generating mode to transit mode. Challenges to design of this concept include stability, seakeeping, convertibility, and dynamic positioning. The most significant challenge is to overcome the large aerodynamic drag which is necessarily associated with power extraction from the wind. With conventional thrusters, the power required to overcome the aerodynamic drag is larger than the power generated by the turbine up through moderate wind speeds. Lacking a mooring system to maintain position, alternative concepts to counter the drag must be considered to realize surplus power through a significant range of conditions. The proposed concept seeks to counter aerodynamic turbine drag with passive propulsion, utilizing the motion of the platform response in waves to generate hydrodynamic thrust. Dynamic positioning, required for the platform to maintain station within 25 feet, can include elements of passive propulsion in thrust vectoring to further reduce power consumption.

* Information listed above is at the time of submission. *

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