ALEXANDRIA, Va., June 17 -- United States Patent no. 12,316,267, issued on May 27, was assigned to ABB Schweiz AG (Baden, Switzerland).

"Stator flux assistance and overexcitation for externally excited synchronous machines" was invented by Sina Kuunsade (Helsinki), Joni Heikkila (Helsinki) and Mikko Kostiainen (Helsinki).

According to the abstract* released by the U.S. Patent & Trademark Office: "An apparatus for a drive for driving an externally excited synchronous motor. The apparatus includes means for performing the following. The apparatus causes the drive to operate in a primary operating mode for achieving unity power factor. The apparatus monitors stator flux linkage load angle, stator flux linkage and torque references. In respon...