ALEXANDRIA, Va., July 3 -- United States Patent no. 12,348,168, issued on July 1, was assigned to HITACHI ASTEMO LTD. (Hitachinaka, Japan).
"Control device for electric motor" was invented by Kentaro Matsuo (Hitachinaka, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A control device for an electric motor includes a harmonic voltage calculation unit that calculates a harmonic voltage to be added to a fundamental wave voltage command value, on a two-phase rotating coordinate system synchronized with a rotor phase, and a harmonic phase delay compensation unit that compensates for a phase delay during calculation in the harmonic voltage calculation unit based on a harmonic order of the harmonic voltage an...