Method and apparatus for reducing rotor blade deflections, loads, and/or peak rotational speed
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United States of America Patent
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Oct 17, 2006
Issued Date -
N/A
app pub date -
Jun 30, 2004
filing date -
Jun 30, 2004
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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.
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