Mobile Offshore Platform for Wind Turbine Power Generation

Award Information
Agency:
Department of Defense
Branch
Defense Advanced Research Projects Agency
Amount:
$98,969.00
Award Year:
2009
Program:
SBIR
Phase:
Phase I
Contract:
W31P4Q-09-C-0253
Award Id:
91845
Agency Tracking Number:
08SB2-0849
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
475 Bridge Street, Suite 100, Groton, CT, 06340
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
112716357
Principal Investigator:
BenjaminConnell
Principal Scientist
(860) 448-3253
bconnell@aphysci.com
Business Contact:
DavidHorne
Sr Vice President/CFO
(860) 448-3253
dhorne@aphysci.com
Research Institute:
n/a
Abstract
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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