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Title: Final Technical Report

Abstract

This variable length wind turbine blade project met the project objectives by successfully completing the task schedule. A set of variable length blades (8 to 12 meters in length) is now flying, in a configuration that is representative of a commercial blade designed to replace a standard 9 meter blade. Static testing and operations show that the blades are durable and stiff enough to prevent tower strikes. Power curve testing shows significant gains in low wind speed power production. An improved controller and drive mechanism have now been working for six months. Moving forward, we continue to monitor power curve, controller performance, and durability data. The project has made good progress towards understanding the costs and challenges associated with commercial production of variable length blades. Items that will require further study are: tip airfoil; blade pitching, tip and root interface design; jigs for more efficient construction, and optimization of subsystems

Authors:
Publication Date:
Research Org.:
Energy Unlimited, Inc
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EE)
OSTI Identifier:
841190
DOE Contract Number:
FG36-03GO13171
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
17 WIND ENERGY; CONFIGURATION; CONSTRUCTION; DESIGN; MONITORS; OPTIMIZATION; PERFORMANCE; POWER GENERATION; PRODUCTION; TESTING; VELOCITY; WIND POWER; WIND TURBINES; TURBINE BLADES; Wind turbine blades; variable length

Citation Formats

Mark H. Dawson. Final Technical Report. United States: N. p., 2005. Web. doi:10.2172/841190.
Mark H. Dawson. Final Technical Report. United States. doi:10.2172/841190.
Mark H. Dawson. Thu . "Final Technical Report". United States. doi:10.2172/841190. https://www.osti.gov/servlets/purl/841190.
@article{osti_841190,
title = {Final Technical Report},
author = {Mark H. Dawson},
abstractNote = {This variable length wind turbine blade project met the project objectives by successfully completing the task schedule. A set of variable length blades (8 to 12 meters in length) is now flying, in a configuration that is representative of a commercial blade designed to replace a standard 9 meter blade. Static testing and operations show that the blades are durable and stiff enough to prevent tower strikes. Power curve testing shows significant gains in low wind speed power production. An improved controller and drive mechanism have now been working for six months. Moving forward, we continue to monitor power curve, controller performance, and durability data. The project has made good progress towards understanding the costs and challenges associated with commercial production of variable length blades. Items that will require further study are: tip airfoil; blade pitching, tip and root interface design; jigs for more efficient construction, and optimization of subsystems},
doi = {10.2172/841190},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Jun 30 00:00:00 EDT 2005},
month = {Thu Jun 30 00:00:00 EDT 2005}
}

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