Method for controlling the operation of an arrangement of at least two electric machines, and motor vehicle

A motor vehicle, comprising

• an arrangement of at least two electric machines coupled for movement with different wheels of the motor vehicle and connected to a battery making available a minimum and a maximum limiting current to the at least two electric machines, and
• a drive controller which controls operation of the at least two electric machines and is configured to
• provide desired torques for the at least two electric machines,
• determine 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,
• determine from the set desired torques a resulting desired current for each of the at least two electric machines,
• compare 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, adjust 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,
• determine adjusted desired torques from the adjusted desired currents, and
• control the at least two electric machines with the adjusted desired torques.