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Title: Oscillating fluid power generator

Patent ·
OSTI ID:1126496

A system and method for harvesting the kinetic energy of a fluid flow for power generation with a vertically oriented, aerodynamic wing structure comprising one or more airfoil elements pivotably attached to a mast. When activated by the moving fluid stream, the wing structure oscillates back and forth, generating lift first in one direction then in the opposite direction. This oscillating movement is converted to unidirectional rotational movement in order to provide motive power to an electricity generator. Unlike other oscillating devices, this device is designed to harvest the maximum aerodynamic lift forces available for a given oscillation cycle. Because the system is not subjected to the same intense forces and stresses as turbine systems, it can be constructed less expensively, reducing the cost of electricity generation. The system can be grouped in more compact clusters, be less evident in the landscape, and present reduced risk to avian species.

Research Organization:
D C M STUDIOS LTD
Sponsoring Organization:
USDOE
DOE Contract Number:
FG36-06GO16044
Assignee:
GFO
Patent Number(s):
8,657,575
Application Number:
11/895,568
OSTI ID:
1126496
Country of Publication:
United States
Language:
English

References (31)

Wind machine with reciprocating blade means patent December 1976
Aeolian windmill patent May 1977
Rotary device driven by a moving fluid patent September 1977
Vertical axis wind turbine motor patent October 1977
Wind driven apparatus for power generation patent February 1981
Horizontal axis wind generator having adaptive cyclic pitch control patent November 1981
Governor for fluid current motor patent August 1982
Piezoelectric fluid-electric generator patent June 1983
Fluid machine patent December 1984
Device for harnessing wind energy including shock absorber patent January 1985
Wind-powered machine patent June 1985
Piezoelectric wind generator patent August 1985
Self-adjusting wind power machine patent April 1986
Valvular sail power plant patent August 1987
Wind motor patent April 1991
Articulated blade with automatic pitch and camber control patent March 1993
Oscillating, lateral thrust power generator patent June 1994
Rotatable wheel for developing fluid kinetic energy by accepting action forces from multiple directions patent December 1998
Apparatus for generating electricity from flowing fluids patent November 2000
Extraction of energy from flowing fluids patent August 2001
Large vertical-axis variable-pitch wind turbine patent November 2001
Hydrodynamic power-generating system patent November 2001
Self-trimming oscillating wing system patent November 2003
Wing energy catchment device patent March 2004
Water generator oscillating due to rapid flow of fluid patent May 2004
Eolic marine electrical generator GEEM patent May 2004
Wind turbine patent February 2005
Vertical axis wind turbine with controlled gybing patent August 2005
Windpower generating apparatus patent-application June 2002
Self-Trimming Oscillating Wing System patent-application July 2003
Multi-directional wind power generator patent-application June 2005

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