| 摘要 |
<P>PROBLEM TO BE SOLVED: To more appropriately drive and control a synchronous motor, by more appropriately setting current commands on d axis and q axis. <P>SOLUTION: When changing the current commands Id*, Iq* on d axis and q axis according to the change of a control line between an optimal line and a loss increment line, a control effective value Irms* is set up by changing an effective value from a start effective value Irms0 toward a target effective value Irmstag at a change rate of ΔIrms (S130, S180), and a control current angle θi* is set up based on the set control effective value Irms*, a torque command Tm* and the control current angle θi* (S140), and the motor is driven and controlled by setting up the current commands Id*, Iq* on d axis and q axis corresponding to the control effective value Irms* and the control current angle θi* (S150, S160). <P>COPYRIGHT: (C)2011,JPO&INPIT |
