Patent ID: 8384327

Claim:
A control apparatus for an electric rotating machine to control at least one controlled variable of the electric rotating machine by manipulating an output voltage of a power converter circuit including switching elements operated at a set modulation index to connect positive and negative terminals of a DC power source to corresponding terminals of the electric rotating machine, the control apparatus comprising: a prediction section configured to predict the controlled variable of the electric rotating machine for each of a plurality of cases where the power converter circuit is set in a corresponding one of a plurality of predetermined operating states; a manipulation section configured to determine one of the predetermined operating states depending on a result of evaluation by an evaluation function which receives the predicted controlled variable and a command value of the controlled variable as input parameters thereof, and to set the converter circuit to the determined operating state; and a feedback control section configured to feedback-control an average value of magnitude of the output voltage of the power converter circuit at a target value set in accordance with a voltage of the DC power source by manipulating the input parameters of the evaluation function depending on the average value of magnitude of the output voltage of the power converter circuit.