US Patent Issued to SOUTHEAST UNIVERSITY on Oct. 14 for "Positive and negative bipolar modular multilevel alternating current-alternating current frequency converter" (Chinese Inventors)

ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,445,060, issued on Oct. 14, was assigned to SOUTHEAST UNIVERSITY (Nanjing, China).

"Positive and negative bipolar modular multilevel alternating current-alternating current frequency converter" was invented by Fujin Deng (Jiangsu, China) and Haoran Yi (Jiangsu, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure provides a positive and negative bipolar modular multilevel alternating current (AC)-AC frequency converter, including a modular multilevel frequency converter and a three-phase three-winding bipolar transformer. The modular multilevel frequency converter has an ABC three-phase structure, each phase includes the same uppe...