Load attenuating passively adaptive wind turbine blade
- Albuquerque, NM
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.
- Research Organization:
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC04-94AL85000
- Assignee:
- Sandia Corporation (Albuquerque, NM)
- Patent Number(s):
- H002057
- Application Number:
- 09/758166
- OSTI ID:
- 875189
- Resource Relation:
- Patent File Date: 2001 Jan 10
- Country of Publication:
- United States
- Language:
- English
Similar Records
Aeroelastic behavior of twist-coupled HAWT blades
Evaluation of Aeroelastically Tailored Small Wind Turbine Blades Final Project Report
Related Subjects
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/