Method for Enhancing Low Voltage Ride Through Capability on a Wind Turbine
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United States of America Patent
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Issued Date -
Oct 17, 2013
app pub date -
Apr 17, 2012
filing date -
Apr 17, 2012
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Abandoned
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Abstract
A method for providing a normal operation of a wind turbine during unstable voltage events at an electric transmission grid using a ferroresonant transformer is disclosed. The method may include providing at least one auxiliary wind turbine component powered through a ferroresonant transformer. The method may further include providing a substantially constant output voltage to the auxiliary component(s) connected to the ferroresonant transformer in an event of an over voltage spike at the electric transmission grid and providing a substantially constant output voltage for a limited period of time to the auxiliary component(s) in an event of a low voltage at the electric transmission grid. The method may additionally include filtering damaging harmonic frequencies from the electric transmission grid during a normal voltage power supply.
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