ALEXANDRIA, Va., Feb. 24 -- United States Patent no. 12,562,656, issued on Feb. 24, was assigned to Hyundai AutoEver Corp. (Seoul, South Korea).
"PWM control apparatus and method for 2-stage inverter" was invented by Dong Hwi Lim (Seoul, South Korea) and Eun Su Jun (Seoul, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "A PWM control apparatus of a 2-stage inverter includes: a first inverter; a second inverter; and a PWM controller which PWM-controls the first inverter and the second inverter, respectively, wherein the PWM controller controls the first inverter by remote-state PWM (RSPWM), the PWM controller determines whether it is necessary to generate five edges in next PWM period in the RSPWM ...