ALEXANDRIA, Va., Feb. 26 -- United States Patent no. 12,233,751, issued on Feb. 25, was assigned to Mitsubishi Electric Corp. (Tokyo).
"Propulsion control device and propulsion control method" was invented by Ayano Nakagawa (Tokyo), Yoshinori Yamashita (Tokyo) and Yoshinori Chiba (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "A propulsion control device includes: a first wire connectable to a power line supplied with direct-current power or a ground line connected to a reference potential; a second wire connectable to the power line or the ground line; and a brake chopper circuit in which a first switching element to which a first diode is connected in parallel and a second switching element to which ...