Torque control for a wind turbine generator in case of fault
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United States of America Patent
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Mar 7, 2017
Grant Date -
Jan 8, 2015
app pub date -
Feb 14, 2013
filing date -
Feb 14, 2012
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Abstract
A method and controller for controlling the torque in a wind turbine is described wherein the wind turbine is configured to deliver power via a converter to a public grid. The method comprises the steps of: receiving a fault signal; and, in response to said fault signal, a converter controller controllably ramping down the torque of said turbine from a nominal torque value to a predetermined low torque value within a predetermined time window selected from 0.2-2 seconds, preferably 0.5-1.5 seconds.
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