公开(公告)号：US20240421681A1

公开(公告)日：2024-12-19

申请号：US18336202

申请日：2023-06-16

Applicant: GM Global Technology Operations LLC

Inventor： Alireza Fatemi ,  Alan G. Holmes ,  Shawn H. Swales ,  Mazharul Chowdhury ,  Muhammad Hussain Alvi ,  Peng Peng ,  Thomas W. Nehl

IPC: H02K21/04 ,  B60L53/22

Abstract: A vehicle's electrified powertrain includes a battery pack linked to a traction power inverter module (TPIM) converting DC voltage from the battery pack into AC voltage. A rotary electric machine includes a stator energized by the TPIM's AC voltage, enclosing a rotor core capable of rotation. The rotor core contains slots holding conductive bars and permanent magnets, with conductive bars positioned closer to the rotor core's center. The conductive bars and permanent magnets are separated by gaps within each slot. An annular end ring assembly is present at one end of the rotor core, featuring terminal conductors connected to subsets of conductive bars and a secondary coil of a rotary transformer. When the stator is energized, the rotor shaft, connected to the rotor, rotates. The electric machine powers a transmission, which is coupled to the rotor shaft.