| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a transformerless system interconnection power inverter circuit. <P>SOLUTION: The transformerless system interconnection power inverter circuit is used for feeding power to a system while inverting a DC power supply outputted by a power generation system to an AC power supply. The circuit is provided with a step-up/step-down converter, which adjusts two DC voltages generated by dividing the DC power supply into series with a capacitor, and at least a set of half-bridge inverters for feeding power to the system while inverting the two DC voltages to an AC voltage. By that, it is possible to avoid the problem of the simultaneous grounding of the DC side and the AC side without installing an isolation transformer. It is also possible to significantly improve the volume, manufacturing costs or conversion efficiency of the power inverter circuit. <P>COPYRIGHT: (C)2007,JPO&INPIT |
