ALEXANDRIA, Va., Dec. 23 -- United States Patent no. 12,506,420, issued on Dec. 23, was assigned to MITSUBISHI ELECTRIC Corp. (Tokyo).
"Control unit for power converter, and power conversion apparatus" was invented by Shota Hanioka (Tokyo) and Masahiro Iezawa (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "A controlling circuitry of a power converter performs switchover control for, on the basis of a level specification signal, switching between a 3-level operation mode of outputting AC voltage composed of 3-level voltages at a positive side and a negative side of a DC circuit and a voltage-division point of DC voltage between the positive side and the negative side of the DC circuit by performing ON/O...