公开(公告)号：US12231064B2

公开(公告)日：2025-02-18

申请号：US17760084

申请日：2021-02-01

Applicant: RENAULT S.A.S

Inventor： Malek Ghanes ,  Mohamed Hamida ,  Abdelmalek Maloum ,  Mehdi Taherzadeh

IPC: H02P6/10 ,  H02P6/18 ,  H02P21/12 ,  H02P21/14 ,  H02P21/20

Abstract: A device estimates the electromagnetic torque of a three-phase synchronous electric machine including permanent magnets. The device includes: a first flux estimator including two integrators of electromotive force for estimating the respective components of the flux in a fixed two-phase coordinate system tied to the stator, an estimator for estimating the torque from the respective estimated-flux components, a second flux estimator that uses currents expressed in a rotating two-phase coordinate system tied to the rotor, with an observer for determining variables that characterize magnetic uncertainties of the machine with a view to correcting the flux estimation of the second estimator, and a detector for generating a signal for resetting initial flux conditions of the two integrators based on the flux estimation delivered by the second estimator, when the discrepancy between the estimated torque and a setpoint torque is higher than a predefined threshold.