ALEXANDRIA, Va., Jan. 20 -- United States Patent no. 12,531,497, issued on Jan. 20.
"Optimized motor drive for air core motors" was invented by Christopher Gabrys (Reno, Nev.) and Timothy Rodgers (Bainbridge Island, Wash.).
According to the abstract* released by the U.S. Patent & Trademark Office: "An electronic motor drive for powering permanent magnet air core synchronous motors having sinusoidal back emf includes a switchmode power converter coupled to a connection of an input power supply. The power converter converts power from the input power supply with a current-mode control output and regulates current to a variable voltage link that supplies the regulated current to a non-modulating commutation inverter that energizes multi-phas...