Operating a wind turbine being connected to a utility grid solely via an umbilical AC cable with a network bridge controller performing a power and a voltage control
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United States of America Patent
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May 15, 2018
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N/A
app pub date -
Jun 7, 2016
filing date -
Jul 7, 2015
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Abstract
A method for controlling the operation of a wind turbine is provided. The method includes receiving, by means of a power controller, an active power reference signal and an active power feedback signal; determining, by means of the power controller and based on the active power reference signal and the active power feedback signal, a first voltage control signal and a power controller frequency signal; determining, by means of a frequency droop gain unit and based on the power controller frequency signal, a second voltage control signal; determining, by means of a theta integrator unit and based on the power controller frequency signal, an actual angle signal being indicative for an actual angle between a rotating dq reference frame and a stationary abc reference frame; and controlling operation of a network bridge based on the first voltage control signal, the second voltage control signal, and the actual angle signal.
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