ALEXANDRIA, Va., Jan. 29 -- United States Patent no. 12,212,141, issued on Jan. 28, was assigned to MITSUBISHI ELECTRIC Corp. (Tokyo).

"Grid system and control device of grid system" was invented by Yuki Itogawa (Tokyo), Sadayuki Inoue (Tokyo), Tomihiro Takano (Tokyo), Keishi Matsuda (Tokyo) and Xiaowei Dui (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A power conversion device inputs or outputs a power for changing a state quantity of a distribution grid to which a voltage source device is connected, to or from the distribution grid. A grid control unit calculates a power command value of the power conversion device such that a drooping characteristic is provided for compensating for a deviation fro...