HYBRID EXCITED ROTARY MACHINE

Organization Name

GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor(s)

Alireza Fatemi of Canton MI (US)

Alan G. Holmes of Clarkston MI (US)

Shawn H. Swales of Canton MI (US)

Mazharul Chowdhury of Canton MI (US)

Muhammad Hussain Alvi of Troy MI (US)

Peng Peng of Columbus OH (US)

Thomas W. Nehl of Shelby Twp. MI (US)

HYBRID EXCITED ROTARY MACHINE

This abstract first appeared for US patent application 18336202 titled 'HYBRID EXCITED ROTARY MACHINE

Original Abstract Submitted

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.