ALEXANDRIA, Va., Feb. 5 -- United States Patent no. 12,218,606, issued on Feb. 4, was assigned to MITSUBISHI ELECTRIC Corp. (Tokyo).
"Power conversion device" was invented by Miwako Tanaka (Tokyo), Toshiyuki Fujii (Tokyo), Takuya Kajiyama (Tokyo) and Akito Nakayama (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "A first voltage control circuitry controls a first representative value, i.e., an average-value corresponding value of DC capacitor voltages of all converter cells to follow an overall voltage command value. A phase balance control circuitry controls second representative values, i.e., average-value corresponding values of DC capacitor voltages of the converter cells in leg circuits for respect...