Patent ID: 11827109

Abstract:
A method of operating an electric or hybrid system comprising a synchronous reluctance electric motor coupled to an electric or hybrid powertrain is described herein. The method comprises determining (i) a torque demand required of the electric motor and (ii) a speed of rotation of the rotor of the electric motor, and storing kinetic energy in a rotor of the electric motor from the powertrain in response to at least one of (i) the determined torque demand falling below a selected torque demand threshold and (ii) the speed of the rotor being below a selected rotor speed threshold. The method further comprises operating the electric motor by powering the electric motor with electricity to deliver energy to the powertrain in response to at least one of: (i) the determined torque demand rising above a selected torque demand threshold and (ii) the speed of the rotor falling below a selected rotor speed threshold.