US Patent Issued to ABB Schweiz on Sept. 23 for "Method for fixing an output power limit of a frequency converter and a method for diagnosing conditions of DC-link capacitors" (Polish Inventors)

ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,424,944, issued on Sept. 23, was assigned to ABB Schweiz AG (Baden, Switzerland).

"Method for fixing an output power limit of a frequency converter and a method for diagnosing conditions of DC-link capacitors" was invented by Piotr Krysztofiak (Rawa Mazowiecka, Poland) and Artur Falkowski (Cracow, Poland).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for fixing an output power limit of a frequency converter includes determining voltage differences between two DC-link circuit capacitors for each of two different values of an output power of a frequency converter; determining a percentile value for each voltage difference by rejecting values hig...