Ge Vernova Infrastructure Technology LLC

Dustin F Howard

A method for decoupling a mechanical drivetrain resonance mode of an inverter-based resource from the external electrical system includes receiving one or more voltage feedback signals at a node between the inverter-based resource and the external electrical system. The method also includes filtering the one or more voltage feedback signals to extract changes in a voltage at a frequency associated with the drivetrain resonance mode. Further, the method includes determining at least one current command or power command based on the filtered one or more voltage feedback signals. Moreover, the method includes controlling the power converter according to the at least one current command and controlling the energy buffer according to the power command so as to reduce or eliminate the changes in the voltage at the frequency associated with the drivetrain resonance mode.

System and method of decoupling drivetrain related power oscillations of an inverter-based resource from active power injected into the electrical grid

A method for controlling a power generating asset connected to an electrical grid includes receiving a grid power limit associated with a grid event and, based on the grid power limit, determining a target grid power for the generator during recovery from the grid event. During the recovery, a first power softening function is implemented that includes receiving at least one of a torsional angle signal or change in speed signal associated with the drivetrain. Upon the torsional angle or change in speed crossing a threshold value, the method decrease a power command on the generator below the target grid power to reduce the torsional angle at a later point in time. A power difference between the target grid power and the decreased power command of the generator is determined and power is supplied from an energy storage device in communication with the converter to make up the power difference.

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Brookhaven, GA, United States of America

Dustin F Howard