ALEXANDRIA, Va., Dec. 16 -- United States Patent no. 12,500,540, issued on Dec. 16, was assigned to GM Global Technology Operations LLC (Detroit).

"System for mutual inductance cancellation for H-type multilevel converters" was invented by Yilun Luo (Ann Arbor, Mich.), Junghoon Kim (Springboro, Ohio), Khorshed Mohammed Alam (Canton, Mich.), Chandra S. Namuduri (Troy, Mich.) and Rashmi Prasad (Troy, Mich.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A multi-phase power inverter for an electric propulsion system includes a plurality of H-type multilevel power converters arranged between a high-voltage DC power supply and an electric machine. Each of the plurality of H-type multilevel power converters is a so...