US 12,395,004 B2
Charging through electric drive system with minimum torque disturbance
Dongxu Li, Troy, MI (US); Minh-Khai Nguyen, Troy, MI (US); Avoki M. Omekanda, Rochester, MI (US); Chandra S. Namuduri, Troy, MI (US); Rashmi Prasad, Troy, MI (US); and Lei Hao, Troy, MI (US)
Assigned to GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US)
Filed by GM Global Technology Operations LLC, Detroit, MI (US)
Filed on Apr. 20, 2023, as Appl. No. 18/304,025.
Prior Publication US 2024/0356361 A1, Oct. 24, 2024
Int. Cl. H02K 19/06 (2006.01); B60L 53/50 (2019.01); B60L 53/60 (2019.01); H02J 7/24 (2006.01); H02P 21/22 (2016.01); H02P 27/06 (2006.01)
CPC H02J 7/24 (2013.01) [B60L 53/50 (2019.02); B60L 53/60 (2019.02); H02P 21/22 (2016.02); H02P 27/06 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of charging a battery of an electric vehicle, comprising:
turning off the electric vehicle to allow a rotor of an electric motor of the electric vehicle to come to rest at an initial rotor position, the electric motor including a plurality of windings;
locating a boundary of an electrical lash region associated with the rotor;
determining a selected winding of the plurality of windings, the selected winding having a phase vector located close to the electrical lash region;
deactivating the selected winding;
flowing a current through the electric motor with the selected winding deactivated to rotate the rotor towards a direction of the selected winding; and
charging the battery through the electric motor with the rotor rotated towards the selected winding.