US Patent Issued to HITACHI ASTEMO on May 26 for "Synchronous-motor control device and electric vehicle" (Japanese Inventors)

ALEXANDRIA, Va., May 26 -- United States Patent no. 12,640,672, issued on May 26, was assigned to HITACHI ASTEMO LTD. (Hitachinaka, Japan).

"Synchronous-motor control device and electric vehicle" was invented by Shun Taniguchi (Tokyo), Noriya Nakao (Tokyo), Kentaro Matsuo (Hitachinaka, Japan), Kazuaki Tobari (Tokyo) and Toshiyuki Ajima (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A synchronous-motor control device includes a torque-command-value conversion unit for converting a torque command value for a synchronous motor into a second-torque command value which gradually increases in a region including a peak of a torque of the synchronous motor, a voltage-phase control unit for controlling a volta...