| 摘要 |
PURPOSE: To reduce the load feeder voltage fluctuation of an inverter device when a load fluctuates by using a voltage compensation signal in a filter circuit and the output voltage setting signal and the addition signal of the inverter device as an output voltage command signal of the inverter circuit. CONSTITUTION: A compensation operation circuit 13 has an equivalent circuit constant corresponding to a filter circuit consisting of a reactor 3 and a capacitor 5 and calculates the voltage drop caused at the filter circuit by a load current with the load current detection signal of a load current detector 11 as input and used it as a voltage compensation signal. Then, the addition signal of the voltage compensation signal and the output voltage setting signal of the inverter device by a voltage setting circuit 7 is used as the output voltage command signal of an inverter circuit 2, thus reducing the load feeder voltage fluctuation of the inverter device when a load 6 fluctuates. |
