ALEXANDRIA, Va., Sept. 17 -- United States Patent no. 12,418,248, issued on Sept. 16, was assigned to Huawei Digital Power Technologies Co. Ltd. (Shenzhen, China).
"Photovoltaic system, inverter, and control method" was invented by Xinyu Yu (Shanghai), Xudong Wang (Shanghai), Kai Xin (Shanghai) and Lei Shi (Shanghai).
According to the abstract* released by the U.S. Patent & Trademark Office: "A three-level neutral point clamped inverter includes four switch units. When an average value of an output current of the three-level neutral point clamped inverter is greater than a first current threshold or less than a second current threshold, only one of the four switch units is controlled to perform a high-frequency operation, to reduce power ...