| 主权项 |
1. A method for controlling an operation of an arrangement of at least two electric machines which are coupled for movement with different wheels of a motor vehicle and which are connected to a battery making available a minimum and a maximum limiting current to the at least two electric machines, the method comprising:
with a drive control logic, providing desired torques for the at least two electric machines, determining for each electric machine a maximum and a minimum possible limit torque of the electric machine by taking into account as operating parameters of the electric machine at least one of a temperature of the at least two electric machines, a power electronics system of the at least two electric machines and parameters relating to performance of the at least two electric machines, and when the desired torques provided by the control logic does not lie within the limit torque for each electric machine, setting the desired torques to the limit torque that has been exceeded, determining from the set desired torques a resulting desired current for each of the at least two electric machines, comparing a sum of the desired currents of the at least two electric machines to the maximum and the minimum limiting current, when the sum lies outside an interval defined by the maximum and minimum limiting currents, adjusting the desired currents while maintaining at least one of a steering action to be produced by controlling the at least two electric machines and a total torque so that the sum of the desired currents lies within the interval defined by the maximum and minimum limiting currents, determining adjusted desired torques from the adjusted desired currents, and controlling the at least two electric machines with the adjusted desired torques. |
