Motor power management method based on EMB product performance improvement

Abstract

The invention belongs to the technical field of vehicle motor control, and particularly provides a motor power management method based on EMB product performance improvement, and the method comprises the steps: dividing the bus voltage of a motor into a plurality of intervals, and dividing the operation speed of the motor into a plurality of operation intervals from a low speed to a high speed, the bus voltage and the running speed of the motor respectively correspond to different motor bus voltage calibration quantities and motor rotating speed calibration quantities; calculating an offset compensation value of the external characteristics of the motor through the motor bus voltage calibration quantity and the motor rotating speed calibration quantity at the corresponding moments; and performing offset compensation on the T-N external characteristics of the motor by using the calculated offset compensation value of the external characteristics of the motor. A motor rotating speed calibration look-up table is introduced to be combined with a motor bus voltage calibration look-up table, the offset offset value of the external characteristics of the motor is recalculated, a T-N curve of the external characteristics of the motor generates offset, the bus current of the motor is within an expected range, meanwhile, the external characteristics of the motor reach the maximum, and therefore the TTL time of an EMB product can be shortened.

Images