Load attenuating passively adaptive wind turbine blade
Abstract
A method and apparatus for improving wind turbine performance by alleviating loads and controlling the rotor. The invention employs the use of a passively adaptive blade that senses the wind velocity or rotational speed, and accordingly modifies its aerodynamic configuration. The invention exploits the load mitigation prospects of a blade that twists toward feather as it bends. The invention includes passively adaptive wind turbine rotors or blades with currently preferred power control features. The apparatus is a composite fiber horizontal axis wind-turbine blade, in which a substantial majority of fibers in the blade skin are inclined at angles of between 15 and 30 degrees to the axis of the blade, to produces passive adaptive aeroelastic tailoring (bend-twist coupling) to alleviate loading without unduly jeopardizing performance.
- Inventors:
-
- Albuquerque, NM
- Issue Date:
- Research Org.:
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 875189
- Patent Number(s):
- H002057
- Application Number:
- 09/758166
- Assignee:
- Sandia Corporation (Albuquerque, NM)
- DOE Contract Number:
- AC04-94AL85000
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 2001 Jan 10
- Country of Publication:
- United States
- Language:
- English
- Subject:
- load; attenuating; passively; adaptive; wind; turbine; blade; method; apparatus; improving; performance; alleviating; loads; controlling; rotor; employs; senses; velocity; rotational; speed; accordingly; modifies; aerodynamic; configuration; exploits; mitigation; prospects; twists; feather; bends; rotors; blades; currently; power; control; features; composite; fiber; horizontal; axis; wind-turbine; substantial; majority; fibers; inclined; angles; degrees; produces; passive; aeroelastic; tailoring; bend-twist; coupling; alleviate; loading; unduly; jeopardizing; rotational speed; wind velocity; statutory invention registration; /416/
Citation Formats
Veers, Paul S., and Lobitz, Donald W. Load attenuating passively adaptive wind turbine blade. United States: N. p., 2003.
Web.
Veers, Paul S., & Lobitz, Donald W. Load attenuating passively adaptive wind turbine blade. United States.
Veers, Paul S., and Lobitz, Donald W. Wed .
"Load attenuating passively adaptive wind turbine blade". United States. https://www.osti.gov/servlets/purl/875189.
@article{osti_875189,
title = {Load attenuating passively adaptive wind turbine blade},
author = {Veers, Paul S. and Lobitz, Donald W.},
abstractNote = {A method and apparatus for improving wind turbine performance by alleviating loads and controlling the rotor. The invention employs the use of a passively adaptive blade that senses the wind velocity or rotational speed, and accordingly modifies its aerodynamic configuration. The invention exploits the load mitigation prospects of a blade that twists toward feather as it bends. The invention includes passively adaptive wind turbine rotors or blades with currently preferred power control features. The apparatus is a composite fiber horizontal axis wind-turbine blade, in which a substantial majority of fibers in the blade skin are inclined at angles of between 15 and 30 degrees to the axis of the blade, to produces passive adaptive aeroelastic tailoring (bend-twist coupling) to alleviate loading without unduly jeopardizing performance.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2003},
month = {1}
}
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