US 12,081,162 B2
System and method for operating a renewable energy source in grid-forming mode (GFM) as a virtual synchronous machine (VSM) with damper winding emulation
Rupam Basak, Howrah (IN); Arvind Kumar Tiwari, Niskayuna, NY (US); Veena Padmarao, Bengaluru (IN); and Rabisankar Roy, Bengaluru (IN)
Assigned to General Electric Renovables Espana, S.L., Barcelona (ES)
Filed by General Electric Renovables Espana, S.L., Barcelona (ES)
Filed on Aug. 25, 2022, as Appl. No. 17/895,476.
Prior Publication US 2024/0072698 A1, Feb. 29, 2024
Int. Cl. H02P 9/00 (2006.01); H02J 3/38 (2006.01); H02J 3/40 (2006.01); H02P 101/15 (2016.01)
CPC H02P 9/007 (2013.01) [H02J 3/381 (2013.01); H02J 3/40 (2013.01); H02J 2300/28 (2020.01); H02P 2101/15 (2015.01)] 17 Claims
OG exemplary drawing
 
1. A method for providing grid-forming mode (GFM) control of an inverter-based renewable energy source having an asynchronous machine connected to a power grid, the method comprising:
deriving a power error signal (PER) between an actual real power output (PB) from the renewable energy source and a power reference (PREF) representing a desired power output of the renewable energy source;
with an inertial power regulator, generating a phase shift angle (Δδ) from the power error signal (PER) to provide virtual synchronous machine (VSM) control functionality to the GFM control of the renewable energy source; and
applying a power angle compensation (Δδ) to the phase shift angle (δIT) from the inertial power regulator to dampen power oscillations and load fluctuations during transient power events.