ALEXANDRIA, Va., May 12 -- United States Patent no. 12,627,215, issued on May 12, was assigned to Sungrow Power Supply Co. Ltd. (Hefei, China).

"Cascaded multi-port converter and three-phase medium-voltage input system" was invented by Jiacai Zhuang (Hefei, China), Jun Xu (Hefei, China) and Yue Dong (Hefei, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A cascaded multi-port converter and a three-phase medium-voltage input system. Input terminals of the module units are cascaded. In each module unit: input ends of the high-voltage conversion units are cascaded, a magnetic core of a multi-winding transformer is wound with multiple primary windings and at least one secondary winding, an output end of eac...