US Patent Issued to CHRISTIAN-ALBRECHTS-UNIVERSITAT ZU KIEL on Oct. 21 for "Voltage transformer" (Swiss, German Inventors)

ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,451,815, issued on Oct. 21, was assigned to CHRISTIAN-ALBRECHTS-UNIVERSITAT ZU KIEL (Kiel, Germany).

"Voltage transformer" was invented by Levy Ferreira Costa (Wettingen AG, Switzerland) and Marco Liserre (Monkeberg, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "The invention relates to a voltage transformer for converting a primary-side alternating voltage at a first voltage level into a secondary-side alternating voltage at a second voltage level, the voltage transformer having a DC link in which a first direct voltage generated from the primary-side alternating voltage is converted into a second direct voltage by means of a DC-to-DC voltage ...