ALEXANDRIA, Va., June 12 -- United States Patent no. 12,301,148, issued on May 13, was assigned to HITACHI ASTEMO LTD. (Hitachinaka, Japan).
"Motor control device, electro-mechanical integrated unit, hybrid system, and electric power steering system" was invented by Takaya Tsukagoshi (Hitachinaka, Japan), Shun Taniguchi (Tokyo) and Takafumi Hara (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "A motor control device is connected to a power converter that performs power conversion from DC power to AC power and controls driving of an AC motor driven using the AC power, and the motor control device includes a carrier wave generation unit that generates a carrier wave, a carrier wave frequency adjustment un...