WIND TURBINE AND AN ASSOCIATED CONTROL METHOD
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United States of America Patent
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N/A
Issued Date -
Nov 15, 2012
app pub date -
Apr 26, 2012
filing date -
Apr 29, 2011
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A partial pitch wind turbine and an associated control method are described wherein the wind turbine blade comprises an inner blade section designed as a stall-controlled blade and an outer blade section designed as a pitch-controlled blade. During operation of the wind turbine, the outer blade sections are pitched out of the wind to reduce the lift force generated in the outer blade sections, thereby reducing the blade root moments due to reduced moment arms. Meanwhile, the inner blade sections continually produce increasing power output for increasing wind speed, thereby allowing for nominal power output to be maintained while effectively de-rating the outer blade sections.
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