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Wind turbine ring/shroud drive system

United States Patent

October 4, 2005
View the Complete Patent at the US Patent & Trademark Office
National Renewable Energy Laboratory - Visit the NREL Technology Transfer Website
A wind turbine capable of driving multiple electric generators having a ring or shroud structure for reducing blade root bending moments, hub loads, blade fastener loads and pitch bearing loads. The shroud may further incorporate a ring gear for driving an electric generator. In one embodiment, the electric generator may be cantilevered from the nacelle such that the gear on the generator drive shaft is contacted by the ring gear of the shroud. The shroud also provides protection for the gearing and aids in preventing gear lubricant contamination.
Blakemore; Ralph W. (Tehachapi, CA)
General Electric Company (Schenectady, NY)
09/ 657,883
September 8, 2000
GOVERNMENT INTEREST This Invention was made with Government support under NREL Subcontract No. ZAM-7-13320-26, Prime Contact DE-AC36-83CH10093 awarded by the Department of Energy. The Government has certain rights in this Invention.