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

Title: Variable diameter wind turbine rotor blades

Abstract

A system and method for changing wind turbine rotor diameters to meet changing wind speeds and control system loads is disclosed. The rotor blades on the wind turbine are able to adjust length by extensions nested within or containing the base blade. The blades can have more than one extension in a variety of configurations. A cable winching system, a hydraulic system, a pneumatic system, inflatable or elastic extensions, and a spring-loaded jack knife deployment are some of the methods of adjustment. The extension is also protected from lightning by a grounding system.

Inventors:
; ; ;
Issue Date:
Research Org.:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1175569
Patent Number(s):
6972498
Application Number:
10/157,337
Assignee:
General Electric Company (Schenectady, NY)
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:  
AC36-83CH10093
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING

Citation Formats

Jamieson, Peter McKeich, Hornzee-Jones, Chris, Moroz, Emilian M., and Blakemore, Ralph W. Variable diameter wind turbine rotor blades. United States: N. p., 2005. Web.
Jamieson, Peter McKeich, Hornzee-Jones, Chris, Moroz, Emilian M., & Blakemore, Ralph W. Variable diameter wind turbine rotor blades. United States.
Jamieson, Peter McKeich, Hornzee-Jones, Chris, Moroz, Emilian M., and Blakemore, Ralph W. Tue . "Variable diameter wind turbine rotor blades". United States. https://www.osti.gov/servlets/purl/1175569.
@article{osti_1175569,
title = {Variable diameter wind turbine rotor blades},
author = {Jamieson, Peter McKeich and Hornzee-Jones, Chris and Moroz, Emilian M. and Blakemore, Ralph W.},
abstractNote = {A system and method for changing wind turbine rotor diameters to meet changing wind speeds and control system loads is disclosed. The rotor blades on the wind turbine are able to adjust length by extensions nested within or containing the base blade. The blades can have more than one extension in a variety of configurations. A cable winching system, a hydraulic system, a pneumatic system, inflatable or elastic extensions, and a spring-loaded jack knife deployment are some of the methods of adjustment. The extension is also protected from lightning by a grounding system.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2005},
month = {12}
}

Patent:

Save / Share: