Wind Turbine Blade Pitch Redundant Safety Arrangement
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United States of America Patent
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Issued Date -
Oct 24, 2013
app pub date -
Apr 23, 2012
filing date -
Apr 23, 2012
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A wind turbine includes a blade position adjustment system providing for continued wind turbine blade repositioning operation even after the occurrence of certain faults. The system includes a plurality of electrically operable motors, each of which is interconnected with one of the wind turbine blades to reposition that wind turbine blade and modify the blade pitch. Each motor includes two or more sets of electrically isolated windings, and a power supply is separately interconnected with each of the electrically isolated winding sets to provide for continued repositioning of each blade upon occurrence of a fault, such as voltage or current deterioration, in one of the winding sets.
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