US Patent Issued to ABB SCHWEIZ on July 14 for "Method and arrangement for operating pump system" (Finnish Inventor)

ALEXANDRIA, Va., July 14 -- United States Patent no. 12,683,531, issued on July 14, was assigned to ABB SCHWEIZ AG (Baden, Switzerland).

"Method and arrangement for operating pump system" was invented by Matti Eskola (Helsinki).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method and apparatus for operating a pump system comprising a rotary pump, a three-phase induction motor operably coupled to the rotary pump, and an AC drive operably coupled to the induction motor, the apparatus being configured to supply the induction motor with a three-phase AC voltage at multiple different angular velocities, monitor an output current of the AC drive generated in response to the supplied voltage at the multiple diffe...