ALEXANDRIA, Va., Feb. 24 -- United States Patent no. 12,562,654, issued on Feb. 24, was assigned to MITSUBISHI ELECTRIC Corp. (Tokyo).
"Power conversion device" was invented by Mitsuru Ishizuka (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "A controlling circuitry of a power converter has a 3-level operation mode of outputting AC voltage composed of 3-level voltages of a DC circuit by performing ON/OFF control of semiconductor elements, and a 2-level operation mode of outputting AC voltage composed of 2-level voltages of the DC circuit by performing ON/OFF control of the semiconductor elements. The controlling circuitry executes first switchover control for switching between the 2-level operation mode...