Advanced wind turbine with lift cancelling aileron for shutdown
Abstract
An advanced aileron configuration for wind turbine rotors featuring an independent, lift generating aileron connected to the rotor blade. The aileron has an airfoil profile which is inverted relative to the airfoil profile of the main section of the rotor blade. The inverted airfoil profile of the aileron allows the aileron to be used for strong positive control of the rotation of the rotor while deflected to angles within a control range of angles. The aileron functions as a separate, lift generating body when deflected to angles within a shutdown range of angles, generating lift with a component acting in the direction opposite the direction of rotation of the rotor. Thus, the aileron can be used to shut down rotation of the rotor. The profile of the aileron further allows the center of rotation to be located within the envelope of the aileron, at or near the centers of pressure and mass of the aileron. The location of the center of rotation optimizes aerodynamically and gyroscopically induced hinge moments and provides a fail safe configuration.
- Inventors:
-
- Warren, VT
- Kemah, TX
- Issue Date:
- Research Org.:
- National Renewable Energy Laboratory (NREL), Golden, CO (United States)
- OSTI Identifier:
- 870473
- Patent Number(s):
- 5527152
- Application Number:
- US patent applicaiton 08/206,867
- Assignee:
- Northern Power Systems, Inc. (Moretown, VT)
- Patent Classifications (CPCs):
-
F - MECHANICAL ENGINEERING F03 - MACHINES OR ENGINES FOR LIQUIDS F03D - WIND MOTORS
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- DOE Contract Number:
- ZA-2-11295-2
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- advanced; wind; turbine; lift; cancelling; aileron; shutdown; configuration; rotors; featuring; independent; generating; connected; rotor; blade; airfoil; profile; inverted; relative; main; section; allows; strong; positive; control; rotation; deflected; angles; range; functions; separate; component; acting; direction; opposite; shut; center; located; envelope; near; centers; pressure; mass; location; optimizes; aerodynamically; gyroscopically; induced; hinge; moments; provides; fail; safe; rotor blade; main section; turbine rotor; wind turbine; direction opposite; positive control; rotors featuring; fail safe; turbine rotors; aileron configuration; advanced aileron; advanced wind; /416/244/
Citation Formats
Coleman, Clint, Juengst, Theresa M, and Zuteck, Michael D. Advanced wind turbine with lift cancelling aileron for shutdown. United States: N. p., 1996.
Web.
Coleman, Clint, Juengst, Theresa M, & Zuteck, Michael D. Advanced wind turbine with lift cancelling aileron for shutdown. United States.
Coleman, Clint, Juengst, Theresa M, and Zuteck, Michael D. Mon .
"Advanced wind turbine with lift cancelling aileron for shutdown". United States. https://www.osti.gov/servlets/purl/870473.
@article{osti_870473,
title = {Advanced wind turbine with lift cancelling aileron for shutdown},
author = {Coleman, Clint and Juengst, Theresa M and Zuteck, Michael D},
abstractNote = {An advanced aileron configuration for wind turbine rotors featuring an independent, lift generating aileron connected to the rotor blade. The aileron has an airfoil profile which is inverted relative to the airfoil profile of the main section of the rotor blade. The inverted airfoil profile of the aileron allows the aileron to be used for strong positive control of the rotation of the rotor while deflected to angles within a control range of angles. The aileron functions as a separate, lift generating body when deflected to angles within a shutdown range of angles, generating lift with a component acting in the direction opposite the direction of rotation of the rotor. Thus, the aileron can be used to shut down rotation of the rotor. The profile of the aileron further allows the center of rotation to be located within the envelope of the aileron, at or near the centers of pressure and mass of the aileron. The location of the center of rotation optimizes aerodynamically and gyroscopically induced hinge moments and provides a fail safe configuration.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Jan 01 00:00:00 EST 1996},
month = {Mon Jan 01 00:00:00 EST 1996}
}
Works referenced in this record:
Feasibility Studies of Spoiler and Aileron Control Systems for Large Horizontal-Axis Wind Turbines
journal, September 1981
- Wentz, W. H.; Snyder, M. H.; Calhoun, John T.
- Journal of Energy, Vol. 5, Issue 5