ALEXANDRIA, Va., June 5 -- United States Patent no. 12,278,576, issued on April 15, was assigned to TMEIC Corp. (Chuo-ku, Japan).
"Electric motor drive device" was invented by Hirotaka Sato (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "An electric motor drive device that includes an electric motor, a main circuit, a current sensor, and a control unit. The electric motor has a plurality of windings. The main circuit transforms power into AC power and supplies the AC power to each of the plurality of windings. The current sensor detects a load current flowing through each of the windings. The control unit controls the main circuit on the basis of a current value detected by the current sensor and contr...