ALEXANDRIA, Va., Aug. 25 -- United States Patent no. 12,719,280, issued on Aug. 25, was assigned to Tianjin University (Tianjin, China).

"Method and device for controlling microgrid of hydrometallurgical plant based on energy storage frequency converter" was invented by Xiandong Xu (Tianjin, China), Yuze Zhao (Tianjin, China), Longfei Liu (Tianjin, China), Jing Liu (Tianjin, China), Manjun Chen (Tianjin, China), Wei Wei (Tianjin, China) and Hongjie Jia (Tianjin, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for controlling a microgrid of a hydrometallurgical plant based on an energy storage frequency converter includes: controlling the opening and closing of a first circuit breaker and a seco...