ALEXANDRIA, Va., Jan. 29 -- United States Patent no. 12,212,253, issued on Jan. 28, was assigned to Regal Beloit America Inc. (Milwaukee).
"Controller and drive circuits for electric motors" was invented by Michael R. Koller (Columbia City, Ind.) and Ludovic Andre Chretien (Columbia City, Ind.).
According to the abstract* released by the U.S. Patent & Trademark Office: "An electric motor system is provided. The electric motor system includes a drive circuit including an inverter configured to supply variable frequency current over a first duration and a switch configured to supply line frequency current over a second duration. The electric motor system further includes an electric motor coupled to the drive circuit and a controller commun...