| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a system interconnection inverter device of low loss by making an input voltage of a first inverter constant, regardless of an output voltage of a DC power supply, so that change in operation frequency of the first inverter which incorporates a resonance circuit becomes smaller. <P>SOLUTION: A step-down converter 12 is arranged between a DC power supply 11 and a first inverter 14 which boosts upto such voltage as can be connected to a commercial grid, so that the first inverter 14 is operated on a constant input voltage. <P>COPYRIGHT: (C)2008,JPO&INPIT |
