ALEXANDRIA, Va., Dec. 31 -- United States Patent no. 12,512,774, issued on Dec. 30, was assigned to SANYO DENKI Co. LTD. (Tokyo).
"Motor control apparatus" was invented by Yuji Ide (Tokyo), Michio Kitahara (Tokyo), Shunichi Miyazaki (Tokyo) and Yoshiyuki Usui (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "A motor control apparatus includes: a smoothing capacitor; an inverter circuit; a torque limiter; and a field-weakening control device. The smoothing capacitor smooths the direct current power. The inverter circuit converts the smoothed direct current power to alternating current power. The torque limiter limits motor torque based on a torque limit value calculated from a direct current voltage appli...