ALEXANDRIA, Va., June 12 -- United States Patent no. 12,301,146, issued on May 13, was assigned to Siemens Energy Global GmbH & Co. KG (Munich).
"Producing a motor voltage for a switch drive" was invented by David Brummund (Halle / Saale, Germany) and Thomas Hilker (Stahnsdorf, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method for producing a voltage for an electric motor of a drive of an electrical switch includes producing a DC link direct voltage from a supply voltage and producing the motor voltage by pulse-width modulation of the direct voltage. A tolerance range for changing the direct voltage is specified, and an actual value of the direct voltage is continually measured. After first mea...