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Wind turbine generators having wind assisted cooling systems and cooling methods

United States Patent

September 23, 2008
View the Complete Patent at the US Patent & Trademark Office
National Renewable Energy Laboratory - Visit the NREL Technology Transfer Website
A wind generator includes: a nacelle; a hub carried by the nacelle and including at least a pair of wind turbine blades; and an electricity producing generator including a stator and a rotor carried by the nacelle. The rotor is connected to the hub and rotatable in response to wind acting on the blades to rotate the rotor relative to the stator to generate electricity. A cooling system is carried by the nacelle and includes at least one ambient air inlet port opening through a surface of the nacelle downstream of the hub and blades, and a duct for flowing air from the inlet port in a generally upstream direction toward the hub and in cooling relation to the stator.
Bagepalli; Bharat (Niskayuna, NY), Barnes; Gary R. (Delanson, NY), Gadre; Aniruddha D. (Rexford, NY), Jansen; Patrick L. (Scotia, NY), Bouchard, Jr.; Charles G. (Schenectady, NY), Jarczynski; Emil D. (Scotia, NY), Garg; Jivtesh (Cambridge, MA)
General Electric Company (Schenectady, NY)
11/ 385,730
March 22, 2006
This invention was made with Government support under Subcontract ZAM-4-31235-05 awarded by NREL and under Prime contract DE-AC36-99-G010337 awarded by U.S. Department of Energy. The government has certain rights in the invention.