US Patent Issued to Sungrow Power Supply on Feb. 18 for "Cascaded power electronic transformer and control method therefor" (Chinese Inventors)

ALEXANDRIA, Va., Feb. 19 -- United States Patent no. 12,231,031, issued on Feb. 18, was assigned to Sungrow Power Supply Co. Ltd. (Hefei, China).

"Cascaded power electronic transformer and control method therefor" was invented by Yue Dong (Hefei, China), Jiacai Zhuang (Hefei, China) and Jun Xu (Hefei, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A cascaded power electronic transformer and a method for controlling the same are provided. The method includes: calculating electrical angles Thetai1 and Thetakps of an sth transformer and a compensation electrical angle Thetaj of a jth transformer; adding the compensation electrical angle Thetaj to the electrical angle Thetakps of the jth transformer, to ob...