US Patent Issued to Queen's University at Kingston on April 15 for "Variable gain modulation methods and controllers for AC-DC converter with power factor correction" (Canadian, Chinese Inventors)

ALEXANDRIA, Va., June 5 -- United States Patent no. 12,278,555, issued on April 15, was assigned to Queen's University at Kingston (Kingston, Canada).

"Variable gain modulation methods and controllers for AC-DC converter with power factor correction" was invented by Yan-Fei Liu (Kingston, Canada), Binghui He (Kingston, Canada), Yang Chen (Hefei, China), Bo Sheng (Kanata, Canada) and Wenbo Liu (Shenzhen, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A controller for an AC-DC converter including a rectifier circuit that converts AC input voltage into DC output voltage uses control logic to control the rectifier circuit according to two or more operating modes. Each operating mode determines a gain of th...