ALEXANDRIA, Va., Jan. 29 -- United States Patent no. 12,212,256, issued on Jan. 28, was assigned to Siemens AG (Munich).

"Parameter identification for induction machines" was invented by Folke Giessler (Lisberg, Germany), Mathias Lehmeier (Neumarkt, Germany), Peter Stark (Bayreuth, Germany) and Harald Wiechmann (Hirschaid, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method and a control apparatus for determining parameters for controlling an electric drive having an electric machine improve the start-up of the electric drive by applying a current indicator as a signal at three-phase winding connections of the electric machine, and measuring a d-component and a q-component of the stator voltage a...