ALEXANDRIA, Va., June 10 -- United States Patent no. 12,294,291, issued on May 6, was assigned to Mitsubishi Electric Corp. (Tokyo).
"Power conversion system" was invented by Takeshi Kikuchi (Tokyo) and Shigeo Hayashi (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "A voltage generated in a DC line at the time when a sub module is deactivated in the event of a short-circuiting fault in the DC line is suppressed. A power conversion system includes a power converter including a leg circuit, a control device, and a voltage suppression circuit connected to a DC line. The leg circuit includes a plurality of sub modules connected in series, and at least one of them is a first sub module implemented by a sub m...