Method and apparatus for controlling pitch and flap angles of a wind turbine
Abstract
A wind turbine with improved response to wind conditions is provided. Blade flap angle motion is accompanied by a change in pitch angle by an amount defining a pitch/flap coupling ratio. The coupling ratio is non-constant as a function of a flap angle and is preferably a substantially continuous, non-linear function of flap angle. The non-constant coupling ratio can be provided by mechanical systems such as a series of linkages or by configuring electronic or other control systems and/or angle sensors. A link with a movable proximal end advantageously is part of the mechanical system. The system can provide relatively large coupling ratios and relatively large rates of coupling ratio changes especially for near-feather pitches and low flap angles.
- Inventors:
-
- Seattle, WA
- Issaquah, WA
- Issue Date:
- Research Org.:
- The Wind Turbine Company (Bellevue, WA)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 988390
- Patent Number(s):
- 7530785
- Application Number:
- 11/106,133
- Assignee:
- The Wind Turbine Company (Bellevue, WA)
- Patent Classifications (CPCs):
-
F - MECHANICAL ENGINEERING F03 - MACHINES OR ENGINES FOR LIQUIDS F03D - WIND MOTORS
F - MECHANICAL ENGINEERING F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04 F05B - INDEXING SCHEME RELATING TO MACHINES OR ENGINES OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, TO WIND MOTORS, TO NON-POSITIVE DISPLACEMENT PUMPS, AND TO GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY
- DOE Contract Number:
- ZAM-7-13220-29
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 17 WIND ENERGY
Citation Formats
Deering, Kenneth J, and Wohlwend, Keith P. Method and apparatus for controlling pitch and flap angles of a wind turbine. United States: N. p., 2009.
Web.
Deering, Kenneth J, & Wohlwend, Keith P. Method and apparatus for controlling pitch and flap angles of a wind turbine. United States.
Deering, Kenneth J, and Wohlwend, Keith P. Tue .
"Method and apparatus for controlling pitch and flap angles of a wind turbine". United States. https://www.osti.gov/servlets/purl/988390.
@article{osti_988390,
title = {Method and apparatus for controlling pitch and flap angles of a wind turbine},
author = {Deering, Kenneth J and Wohlwend, Keith P},
abstractNote = {A wind turbine with improved response to wind conditions is provided. Blade flap angle motion is accompanied by a change in pitch angle by an amount defining a pitch/flap coupling ratio. The coupling ratio is non-constant as a function of a flap angle and is preferably a substantially continuous, non-linear function of flap angle. The non-constant coupling ratio can be provided by mechanical systems such as a series of linkages or by configuring electronic or other control systems and/or angle sensors. A link with a movable proximal end advantageously is part of the mechanical system. The system can provide relatively large coupling ratios and relatively large rates of coupling ratio changes especially for near-feather pitches and low flap angles.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2009},
month = {5}
}