| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a system-cooperative inverter where there is no necessity to supply reactive power always from a system and the increase of loss or the distortion of system voltage does not occur even when much higher harmonic wave generating load is used in a home. <P>SOLUTION: This system-cooperative inverter device has an inverter 12, a system voltage detecting means 15 which detects system voltage, and a harmonic change detection means 16 which detects the change of the higher harmonics of a current to be supplied from the system to a home, and the inverter 12 reduces the instant excess and deficiency of higher harmonics accompanying the switch on/off of load or the change of power by superposing the variation of higher harmonics obtained by the harmonic change detection means 16 to it. <P>COPYRIGHT: (C)2004,JPO |
