| 摘要 |
PURPOSE:To transfer an AC motor rapidly to the desired number of revolution at constant velocity by quickly conducting the rise of the number of revolution at a time when the AC motor is started by an inverter. CONSTITUTION:An AC motor is started by a commercial AC power supply first, control is interrupted temporarily under the state of the pole number when the number of revolution approaches to the desired one, and control is changed over to inverter control. |
