| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve a problem that when an absolute value of a phase current is large, if switching of a switching state is prohibited to reduce a switching loss, responsiveness of control may be lowered. <P>SOLUTION: A prediction part 33 calculates prediction currents ide and iqe for each of switching modes (voltage vectors V0 to V7) that are temporarily set by a mode setting part 31. A mode determination part 34 receives input of the prediction currents ide and iqe and command currents id* and iq*, evaluates the temporarily set switching modes, and determines highly evaluated one of the switching modes as a final switching mode. The switching modes are evaluated lower as deviation between the prediction currents ide and iqe and the command currents id* and iq* is larger and an absolute value of a current in a phase switched in a case involving switching of a switching state is larger. <P>COPYRIGHT: (C)2013,JPO&INPIT |
