| 摘要 |
<P>PROBLEM TO BE SOLVED: To avoid such a state that a current flows in a motor generator greatly differently from a desired value. <P>SOLUTION: A controller predicts a current which flows in a motor generator 10 in the case where the operation state of an inverter IV is set at each of voltage vectors V0-V7 (steps S10-S22). At this time, it excludes a voltage vector, which corresponds to a current that increases a magnetic flux in the direction of a magnetic pole in the vicinity of a switching point between the maximum torque control and weak field control, among these predicted currents, from the candidates for the operation states of the inverter IV (steps S16-S20). It selects a voltage vector, where the deviation between the predicted current and a command current becomes the maximum, among the left candidates, thereby operating the inverter IV. <P>COPYRIGHT: (C)2010,JPO&INPIT |
