Method and apparatus for reducing rotor blade deflections, loads, and/or peak rotational speed
Abstract
A method for reducing at least one of loads, deflections of rotor blades, or peak rotational speed of a wind turbine includes storing recent historical pitch related data, wind related data, or both. The stored recent historical data is analyzed to determine at least one of whether rapid pitching is occurring or whether wind speed decreases are occurring. A minimum pitch, a pitch rate limit, or both are imposed on pitch angle controls of the rotor blades conditioned upon results of the analysis.
- Inventors:
- Issue Date:
- Research Org.:
- National Renewable Energy Laboratory (NREL), Golden, CO (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1175943
- Patent Number(s):
- 7121795
- Application Number:
- 10/880,714
- 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
- Resource Relation:
- Patent File Date: 2004 Jun 30
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 42 ENGINEERING
Citation Formats
Moroz, Emilian Mieczyslaw, and Pierce, Kirk Gee. Method and apparatus for reducing rotor blade deflections, loads, and/or peak rotational speed. United States: N. p., 2006.
Web.
Moroz, Emilian Mieczyslaw, & Pierce, Kirk Gee. Method and apparatus for reducing rotor blade deflections, loads, and/or peak rotational speed. United States.
Moroz, Emilian Mieczyslaw, and Pierce, Kirk Gee. Tue .
"Method and apparatus for reducing rotor blade deflections, loads, and/or peak rotational speed". United States. https://www.osti.gov/servlets/purl/1175943.
@article{osti_1175943,
title = {Method and apparatus for reducing rotor blade deflections, loads, and/or peak rotational speed},
author = {Moroz, Emilian Mieczyslaw and Pierce, Kirk Gee},
abstractNote = {A method for reducing at least one of loads, deflections of rotor blades, or peak rotational speed of a wind turbine includes storing recent historical pitch related data, wind related data, or both. The stored recent historical data is analyzed to determine at least one of whether rapid pitching is occurring or whether wind speed decreases are occurring. A minimum pitch, a pitch rate limit, or both are imposed on pitch angle controls of the rotor blades conditioned upon results of the analysis.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Oct 17 00:00:00 EDT 2006},
month = {Tue Oct 17 00:00:00 EDT 2006}
}
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