METHOD AND SYSTEM FOR CONTROLLING AN AUTOMOTIVE VEHICLE THREE-PHASE ELECTRIC MACHINE SUPPLIED VIA CHOPPED VOLTAGES

摘要

A system for controlling an automotive three-phase electric machine (2) powered by chopped voltages, comprising: means (3) for determining current setpoints of the phases of the electric machine as a function of a torque demand from the actuator; There is provided a system for controlling an automotive three-phase electric machine powered by chopped voltages, comprising adjustment means (4) capable of determining voltages of respective phases as a function of corresponding current settings. The system comprises means (5) for correcting torque oscillations and subtractors (6, 7, 8), wherein the means (5) for correcting the torque oscillations determine the powers of the respective phases, It is possible to determine whether the rotational speed of the subtractors exceeds a threshold value, perform bandpass filtering of the powers, and determine attenuation currents for each phase as a function of post-filtering powers, 6, 7, 8) is capable of subtracting the attenuation currents for each phase from the current setpoints of the corresponding phases and directing the subtraction result to the adjustment means 4.