| 摘要 |
PURPOSE:To effect the voltage control of a converter which is stabilized against the disturbance of current generated upon the sudden change of the load current of an inverter, by effecting the negative feedback of a differential signal of a charging voltage of a smoothing capacitor to the voltage control signal of the converter. CONSTITUTION:A differentiating circuit 31 differentiates the charging voltage of a smoothing capacitor 3 and outputs a differentiating signal 31a multiplied by a gain corresponding to the static capacity of the smoothing capacitor 3. The negative feedback of the differentiating signal 31a to a current commanding signal 15a is effected through an adder 32. This value becomes equivalent to addition of the load current of an inverter 5 to the current commanding signal 15a of a converter 1, whereby the disturbance of a load due to the load current of the inverter 5 may be cancelled. |
