| 摘要 |
PURPOSE:To enable to control a torque of high speed response by applying the primary current to a magnetic flux current component at the starting time and abruptly establishing the magnetic flux. CONSTITUTION:The torque current reference I1 of the output of a speed control circuit 12 is set to zero by a starting time torque current limiter 106 during the period of controlling forcing immediately after starting set by a setter 105, and the current component is applied to a magnetic flux current calculator 16. In other words, the I1d of the maximum value can be obtained by applying all primary current to the magnetic flux current component I1d. The torque current reference I1 is outputted from the limiter 106 after the time selected optimally by a motor while establishing the magnetic flux. In this manner, the control responding at a high speed in a short time can be performed at the starting time. |
