Patent ID: 11932116
Assignee: BORGWARNER INC.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC B  H | IPC B  H

Claim 15:
16. A control system configured to control a rotating electrical machine of a battery electric vehicle (BEV), comprising:
one or more microprocessors that execute a low-efficiency mode of operation for the BEV, wherein the low-efficiency mode of operation includes:
determining that an ambient temperature or some portion of the BEV exist at or below a predetermined temperature; determining a high-efficiency d-axis current command for a commanded torque;
determining a maximum d-axis current command for the commanded torque;
determining a desired amount of inefficiency to be added to the high-efficiency d-axis current command that will be equal to or less than the maximum d-axis current command to generate a low-efficiency mode current command.