Variable speed wind turbine with radially oriented gear drive

Details Variable speed wind turbine with radially oriented gear drive Variable speed wind turbine with radially oriented gear drive

1995-03-03

1997-09-02

Stephan, Steven L.

Prime-mover dynamo plants

Fluid-current motors

Wind

290 44, F03D 1100, F03D 100

Patent

active

056636008

ABSTRACT:
A wind turbine assembly includes a gear drive assembly having an outer tubular member and an inner tubular member, the inner member being positioned coaxially within the outer member. A pair of spaced bearings circumscribe the inner tubular member and support the outer member for rotation about the inner member. Propeller blades are coupled to the outer member for effecting rotation in response to wind. An electric power generator mounted to the inner member has a rotor shaft extending from one end. A gear unit is drivingly coupled between the rotor shaft and the outer member whereby rotation of the outer member is effective to cause rotation of the rotor shaft at a velocity substantially greater than a rotational velocity of the outer member for generating electric power from the generator.

REFERENCES:
patent: 2441446 (1948-05-01), Schmitter
patent: 2951631 (1960-09-01), Gregory
patent: 4140433 (1979-02-01), Eckel
patent: 4695736 (1987-09-01), Doman et al.
patent: 4757211 (1988-07-01), Kristensen
patent: 4871923 (1989-10-01), Scholz et al.
patent: 5083039 (1992-01-01), Richardson et al.
patent: 5155375 (1992-10-01), Holley
patent: 5222924 (1993-06-01), Shin et al.
patent: 5225712 (1993-07-01), Erdman
patent: 5289041 (1994-02-01), Lis
patent: 5289042 (1994-02-01), Holley
Schmidt et al., "Evaluating Variable Speed Generating Systems on the DOE/NASA/MOD-O Wind Turbine", circ 1985, pp. 171-176.
Boldin et al., "Induction Generators Adapted to Variable Speed Operated Wind Turbines", European Wind Energy Conference, Oct. 22-26, 1984, Hamburg Frg, pp. 542-547.
Herrera et al., "Harmonics Generated by Two Variable Speed Wing Generating Systems", IEEE Transactions on Energy Conversion, vol. 3, No. 2, Jun. 1988, pp. 267-273.
McNearney et al., "The Effect of a Power Electronic Converter on Power Fluctuation and Harmonic Distortion in a WECS", pp. 237-241, ASME Wind Energy Symposium, Jan. 14-18, 1980.
Thomas, "An Integration Methodology for Large Wind-Energy Conversion Systems", Final Report, Cornell University, School of Electrical Engineering, Ithaca, NY, Jun. 1986.
Brady, "Description and Test Results of a Variable Speed, Constant Frequency Generating System", U.S. Department of Energy, Washington, DC, Dec. 1985.
Herrera et al., "Experimental Investigation of a Variable Speed Constant Frequency Electric Generating System from a Ultility Perspective", Electrotek Concepts, Inc., Knoxville, TN, May 1985.
"Options for Variable Speed Operation of Horizontal Axis Wind Turbine Generators," U.S. Department of Energy, 1989.

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