ALEXANDRIA, Va., Feb. 24 -- United States Patent no. 12,562,663, issued on Feb. 24, was assigned to MITSUBISHI ELECTRIC Corp. (Tokyo).

"Method and device for injecting high frequency current vector" was invented by Guilherme Bueno Mariani (Rennes, France), Nicolas Voyer (Rennes, France), Gianmario Pellegrino (Turin, Italy) and Anantaram Varatharajan (Turin, Italy).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method and a device inject a high frequency current vector which has a fixed angle with the measured current vector flowing in the machine. The method: measures the motor current vector, determines a projection value of the motor current on an axis that is orthogonal to a direction having the fixed an...