ALEXANDRIA, Va., Nov. 11 -- United States Patent no. 12,468,611, issued on Nov. 11, was assigned to University of South Florida (Tampa, Fla.).

"Unified fault and stability analysis system and method considering unbalanced topologies" was invented by Lingling Fan (Tampa, Fla.) and Zhixin Miao (Tampa, Fla.).

According to the abstract* released by the U.S. Patent & Trademark Office: "For systems subject to unbalanced faults, analytical model building for stability assessment is a challenging task. This application presents a straightforward modeling approach. A generalized dynamic circuit representation is achieved by use of the Laplace transform variables. The voltage and current relationship at the fault location is translated into the rel...