US 11,870,374 B2
Method for adapting the control parameters of an electric traction machine being a permanent magnetic synchronous motor
Sebastian Hall, Hisings Backa (SE)
Assigned to VOLVO TRUCK CORPORATION, Gothenburg (SE)
Filed by VOLVO TRUCK CORPORATION, Gothenburg (SE)
Filed on Dec. 8, 2021, as Appl. No. 17/643,303.
Claims priority of application No. 20215500 (EP), filed on Dec. 18, 2020.
Prior Publication US 2022/0200497 A1, Jun. 23, 2022
Int. Cl. H02P 21/18 (2016.01); H02P 21/14 (2016.01); H02P 21/16 (2016.01); H02P 21/22 (2016.01); B60L 53/20 (2019.01); B60K 1/00 (2006.01); H02P 21/00 (2016.01)
CPC H02P 21/141 (2013.01) [B60K 1/00 (2013.01); B60L 53/20 (2019.02); H02P 21/0025 (2013.01); H02P 21/16 (2016.02); H02P 21/22 (2016.02); H02P 2207/05 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method for adapting control parameters of an electric traction machine being a permanent magnetic synchronous motor, PMSM, the method comprising:
providing a flux linkage of permanent magnets (PM flux) in the PMSM by decoupling the PMSM from drive shaft and performing a first retardation test to measure the flux linkage of the permanent magnets (PM flux) in the PMSM;
performing a stand still characterisation of the PMSM to estimate linked magnetic flux as a function of current;
adding the PM flux to the estimated linked magnetic flux to provide a flux characteristic of the PMSM;
adapting the control parameters of the PMSM based on the flux characteristic.