ALEXANDRIA, Va., Dec. 9 -- United States Patent no. 12,492,838, issued on Dec. 9, was assigned to CARRIER Corp. (Palm Beach Gardens, Fla.).
"Motor identification test" was invented by Ismail Agirman (Southington, Conn.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method for identifying an electric motor includes applying a first predefined current having a first frequency to a terminal of the electric motor. The method further includes calculating a first inductance value of the electric motor at the first frequency. The method includes applying a second predefined d-axis current having a second frequency to the terminal of the electric motor. The method also includes calculating a second inductance valu...