ALEXANDRIA, Va., July 23 -- United States Patent no. 12,368,393, issued on July 22, was assigned to Delta Electronics Inc. (Taoyuan, Taiwan).

"Power conversion circuit for driving motor and control method thereof" was invented by Kuo-Heng Chao (Taoyuan, Taiwan) and Chia-Hsiang Chuang (Taoyuan, Taiwan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A power conversion circuit for driving motor and a control method thereof are provided. The control method includes: comparing a control command with a carrier wave to acquire a PWM signal; identifying whether a phase difference between the output voltage and current falls within a range; if the phase difference falling within the range, determining whether a zero-s...