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Details

Modern Control Design for Flexible Wind Turbines.

DE200515011696

Publication Date	2004
Personal Author	Wright, A. D.
Page Count	233
Abstract	Control can improve energy capture and reduce dynamic loads in wind turbines. In the 1970s and 1980s, wind turbines used classical control designs to regulate power and speed. The methods used, however, were not always successful. Modern turbines are larger, mounted on taller towers, and more dynamically active than their predecessors. Control systems to regulate turbine power and maintain stable, closed-loop behavior in the presence of turbulent wind inflow will be critical for these designs. This report applies modern state-space control design methods to a two-bladed teetering hub upwind machine at the National Wind Technology Center (NWTC), which is managed by the U.S. Department of Energy's National Renewable Energy Laboratory (NREL) in Golden, Colorado. The design objective is to regulate turbine speed and enhance damping in several low-damped flexible modes of the turbine. Starting with simple control algorithms based on linear models, complexity is added incrementally until the desired performance is firmly established.
Keywords	Wind turbines Design criteria Damping Control systems Algorithms Colorado Dynamic loads National Renewable Energy Laboratory Velocity Wind power
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	National Renewable Energy Lab., Golden, CO.; Department of Energy, Washington, DC.
Supplemental Notes	Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200522

Modern Control Design for Flexible Wind Turbines.

Modern Control Design for Flexible Wind Turbines.
DE200515011696

Publication Date	2004
Personal Author	Wright, A. D.
Page Count	233
Abstract	Control can improve energy capture and reduce dynamic loads in wind turbines. In the 1970s and 1980s, wind turbines used classical control designs to regulate power and speed. The methods used, however, were not always successful. Modern turbines are larger, mounted on taller towers, and more dynamically active than their predecessors. Control systems to regulate turbine power and maintain stable, closed-loop behavior in the presence of turbulent wind inflow will be critical for these designs. This report applies modern state-space control design methods to a two-bladed teetering hub upwind machine at the National Wind Technology Center (NWTC), which is managed by the U.S. Department of Energy's National Renewable Energy Laboratory (NREL) in Golden, Colorado. The design objective is to regulate turbine speed and enhance damping in several low-damped flexible modes of the turbine. Starting with simple control algorithms based on linear models, complexity is added incrementally until the desired performance is firmly established.
Keywords	Wind turbines Design criteria Damping Control systems Algorithms Colorado Dynamic loads National Renewable Energy Laboratory Velocity Wind power
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	National Renewable Energy Lab., Golden, CO.; Department of Energy, Washington, DC.
Supplemental Notes	Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200522