US Patent Issued to Siemens Energy Global on Nov. 4 for "Hysteretic control using arm current and error voltage in a modular multilevel converter" (German Inventors)

ALEXANDRIA, Va., Nov. 6 -- United States Patent no. 12,463,551, issued on Nov. 4, was assigned to Siemens Energy Global GmbH & Co. KG (Munich).

"Hysteretic control using arm current and error voltage in a modular multilevel converter" was invented by Rodrigo Alonso Alvarez Valenzuela (Nuremberg, Germany), Kilian Dallmer-Zerbe (Bubenreuth, Germany) and Diego Alberto Roman Marcos (Erlangen, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method operates a power converter having at least one series circuit of switching modules, which each have semiconductor switches and an energy store. In which method a switching frequency of the switching modules is controlled by tolerance based modulation, and the f...