ALEXANDRIA, Va., July 30 -- United States Patent no. 12,374,896, issued on July 29, was assigned to HEFEI UNIVERSITY OF TECHNOLOGY (Hefei, China).
"Passivity-based dual-mode integrated control method for grid-connected inverter" was invented by Ming Li (Hefei, China), Yongtao Mao (Hefei, China), Enjun Liu (Hefei, China), Xing Wang (Hefei, China) and Xing Zhang (Hefei, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A passivity-based dual-mode integrated control method for a grid-connected inverter (GCI) is provided. In view of the insufficient robustness of the conventional single-mode GCI in a high-impedance and low-inertia weak grid, and the problem of wideband oscillation of the grid voltage and grid...