Processor, device, method, and computer program for controlling an emergency operation of a polyphase induction machine upon interruption of a first phase current of a first phase of the polyphase machine

Embodiments relate to a processor (708) for controlling an emergency operation of a polyphase induction machine (701) upon interruption of a first phase current (724-1; 724-2; 724-3) of a first phase of the polyphase machine (701). The processor (708) is formed to a corresponding to the emergency operation control current setting (716-1; 716-2; 716-3) for a second phase of the polyphase machine (701) in a stator-fixed coordinate system by a combination of a normal operation of the electric machine corresponding first command current input (706-1; 706-2; 706-3) for the first phase and a second command current input (706-1; 706-2; 706-3) to be determined for the second phase for the statorfeste coordinate system. (716-2; 716-3 716-1) for said second phase in each case by a phase angle and an amplitude of the second command current input (706-1; 706-2; 706-3) In this case, a phase angle and an amplitude of the control current command differs ,