ALEXANDRIA, Va., June 19 -- United States Patent no. 12,334,844, issued on June 17, was assigned to KOSTAL Drives Technology GmbH (Luedenscheid, Germany).
"Method and device for identifying the anisotrophy of an electric three-phase machine" was invented by Peter Landsmann (Munich), Sascha Kuehl (Munich) and Dirk Paulus (Munich).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method for identifying magnetic anisotropy of an electric three-phase machine having a rotor and a stator is provided. The method includes actuating the machine with a periodic injection voltage via clocked clamping voltages according to a pulse width modulation (PWM) scheme having a switching frequency. An electric current of the machi...