| 摘要 |
PURPOSE:To control the rotating speed of a motor with an inexpensive construction by converting a DC power voltage form a rectifier to an equal or low voltage, and leading the voltage to an inverter. CONSTITUTION:An inverter controller has a rectifier for converting an AC power source 5 to a DC power, and an inverter 3 for converting the DC power converted by the rectifier to supply it to a motor 4. An equal voltage line 12 for leading the DC power voltage from the rectifier to the inverter 3 at an equal voltage, and a low voltage line 13 for leading the DC power voltage from the rectifier to the inverter 3 as the voltage lower than the power voltage are provided, and either one of the lines 12 and 13 is connected through converting means 14 to the inverter 3. |
