skip to main content
DOE Patents title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: 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:
 [1];  [1]
  1. (Albuquerque, NM)
Issue Date:
Research Org.:
SANDIA CORP
OSTI Identifier:
875189
Patent Number(s):
H2057
Assignee:
Sandia Corporation (Albuquerque, NM) SNL
DOE Contract Number:  
AC04-94AL85000
Resource Type:
Patent
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; 15; 30; degrees; produces; passive; aeroelastic; tailoring; bend-twist; coupling; alleviate; loading; unduly; jeopardizing; rotational speed; wind velocity; /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}
}

Patent:

Save / Share: