US Patent Issued to GM GLOBAL TECHNOLOGY OPERATIONS on Aug. 18 for "Alternating current zero torque resistance heating" (Michigan Inventors)

ALEXANDRIA, Va., Aug. 18 -- United States Patent no. 12,709,192, issued on Aug. 18, was assigned to GM GLOBAL TECHNOLOGY OPERATIONS LLC (Detroit).

"Alternating current zero torque resistance heating" was invented by Renato Amorim Torres (Pontiac, Mich.), Lei Hao (Troy, Mich.), Suresh Gopalakrishnan (Troy, Mich.), Chandra S. Namuduri (Troy, Mich.) and Dongxu Li (Troy, Mich.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method and apparatus for heating a battery pack in an electrified vehicle provides a zero d-axis current command a zero q-axis current command to a field-oriented controller for an alternating current (AC) motor coupled to the battery pack through a power inverter module controlled by the fi...