ALEXANDRIA, Va., July 15 -- United States Patent no. 12,665,494, issued on June 23, was assigned to ABB Schweiz AG (Baden, Switzerland).

"Flying capacitor converter and method for protecting a flying capacitor converter" was invented by Hemant Bishnoi (Brugg, Switzerland), Sami Pettersson (Dietikon, Switzerland) and Francisco Canales (Baden-Dattwil, Switzerland).

According to the abstract* released by the U.S. Patent & Trademark Office: "A flying capacitor converter comprising a protection circuit includes at least two cells, each having a capacitor having a first and second DC sides, a first switch connected to the first DC side and to a capacitor of a following cell or an output circuit, and a second switch connected to the second DC si...