US 12,451,696 B2
System and method of decoupling drivetrain related power oscillations of an inverter-based resource from active power injected into the electrical grid
Dustin F. Howard, Brookhaven, GA (US)
Assigned to GE Vernova Infrastructure Technology LLC, Greenville, SC (US)
Filed by General Electric Company, Schenectady, NY (US)
Filed on Feb. 22, 2023, as Appl. No. 18/172,397.
Prior Publication US 2024/0283248 A1, Aug. 22, 2024
Int. Cl. H02J 3/24 (2006.01)
CPC H02J 3/24 (2013.01) [H02J 2300/28 (2020.01)] 20 Claims
OG exemplary drawing
 
1. A method for decoupling a mechanical drivetrain resonance mode of an inverter-based resource from an external electrical system, the inverter-based resource having a power converter, a generator, and an energy buffer, the method comprising:
receiving, via a controller, one or more voltage feedback signals at a node between the inverter-based resource and the external electrical system;
filtering, via the controller, the one or more voltage feedback signals to extract changes in a voltage at a frequency associated with the drivetrain resonance mode;
determining, via the controller, at least one current command or power command based on the filtered one or more voltage feedback signals; and
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.