Method and system for deriving wind speed in a stall controlled wind turbine
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United States of America Patent
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Issued Date -
May 1, 2008
app pub date -
Oct 22, 2007
filing date -
Oct 20, 2006
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
Methods and systems for improving stall controlled wind turbine effectiveness by accurately determining wind speed without using an anemometer or other independent wind speed measuring device. Wind speed may be determined, among other methods, by tracking a mapped TSR model with respect to an operating stall controlled wind turbine in a given TSR range; decreasing a Ramp Start RPM value upon reaching a maximum desired power level and by following a mapped RPM into ramp (the control going into RS) for the desired wind speed range; upon reaching a desired RPM level, raising the RPM with power; and/or using periodic unloading of the rotor. The wind speed information may be utilized to control wind turbine parameters.
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