公开(公告)号：US11575341B1

公开(公告)日：2023-02-07

申请号：US17514239

申请日：2021-10-29

Applicant: GM Global Technology Operations LLC

Inventor： Wei Zeng ,  Scott E. Parrish ,  Jeffrey Wentz Yambor ,  Young J. Kim

IPC: H02P29/66 ,  B60L3/00

Abstract: A method for predicting a rotor temperature of an electric motor for an electric vehicle. The method includes measuring at least one of an operating parameter of the electric motor; inputting the at least one of the operating parameter of the electric motor into a predetermined regression model to predict a rotor temperature of the electric motor; and communicating the rotor temperature of the electric motor to a vehicle control module for managing the electric motor. The operating parameters includes a measured stator temperature, a torque level output, a rotor speed, and a coolant flowrate of the fixture electric motor. The electric motor may be that of an induction motor.