ALEXANDRIA, Va., Aug. 12 -- United States Patent no. 12,706,464, issued on Aug. 11, was assigned to SungrowPower Supply (Jiangsu) Co. Ltd. (Nanjing, China).

"Multi-converter parallel connection system and off-grid startup method" was invented by Ye Xu (Nanjing, China), Haitao Li (Nanjing, China), Lin Cheng (Nanjing, China) and Jinhu Cao (Nanjing, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A voltage regulation method for a multi-converter parallel connection system is provided. The multi-converter parallel connection system includes N converters. Alternating-current sides of the N converters are connected to an alternating-current bus. N is an integer greater than or equal to 2. M converters among t...