US 12,145,570 B2
Method for managing a torque to be supplied by an electric motor
Jean-Marc Baissac, Toulouse (FR); and Magali Pons, Toulouse (FR)
Assigned to VITESCO TECHNOLOGIES GMBH, Regensburg (DE)
Appl. No. 17/634,421
Filed by VITESCO TECHNOLOGIES GMBH, Regensburg (DE)
PCT Filed Jul. 7, 2020, PCT No. PCT/EP2020/069114
§ 371(c)(1), (2) Date Feb. 10, 2022,
PCT Pub. No. WO2021/028123, PCT Pub. Date Feb. 18, 2021.
Claims priority of application No. 1909172 (FR), filed on Aug. 13, 2019.
Prior Publication US 2022/0314960 A1, Oct. 6, 2022
Int. Cl. H02P 6/16 (2016.01); B60W 10/08 (2006.01); B60W 10/26 (2006.01); B60W 20/13 (2016.01); H02P 23/00 (2016.01); H02P 29/40 (2016.01)
CPC B60W 20/13 (2016.01) [B60W 10/08 (2013.01); B60W 10/26 (2013.01); H02P 23/0031 (2013.01); H02P 29/40 (2016.02); B60W 2510/083 (2013.01); B60W 2510/244 (2013.01); B60W 2556/25 (2020.02); B60W 2710/083 (2013.01); B60W 2710/086 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A method for managing a torque to be supplied on a shaft of an electric motor in a system including the electric motor, a battery configured to supply the electric motor with power, and a DC-to-DC converter connected between the battery and the motor, the method comprising:
creating and initializing a correction data table;
acquiring a torque instruction for a torque to be exerted on the motor shaft from a central management device;
determining a torque command based on the received torque instruction and a datum from the correction data table corresponding thereto;
measuring a current output from the converter and measuring a current output from the battery;
calculating an electrical power based on the two measured current outputs and a voltage across terminals of the motor;
determining, based on a map associated with the motor, a corresponding torque based on the electrical power at the motor and a rotational speed of the motor;
reading information provided by the motor relating to the torque exerted on the shaft of the motor;
calculating a difference between the information provided by the motor relating to the torque exerted on the shaft of the motor and the torque determined based on the electrical power at the motor and the map associated with the motor; and
potentially updating the correction data table according to the calculated difference.