| 摘要 |
PURPOSE:To obtain an inverter controller which is not influenced by the fluctuation of a system voltage in order to control the active power and reactive power of the inverter linked in a system with control of the output current of the inverter. CONSTITUTION:A voltage detector 6 which detects a system voltage, a voltage fluctuation correcting circuit 19 which outputs a signal for correction of the fluctuation of the system voltage in accordance with the value detected by the voltage detector 6 and a current instruction calculting circuit 12 to which an active power instruction form an active power setting circuit 9, a reactive power instruction from a reactive power setting circuit 10, a sine wave signal from a sine wave generator 11 and a voltage fluctuation correction signal from a voltage fluctuation correction circuit 19 are inputted are provided. With this constitution, in order to calculate a current instruction, an inverter current can be controlled with a high accuracy by using the signal for the correction of the fluctuation of the system voltage. |
