| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a power converter that achieves active single operation detection that hardly receives an influence from an output variation of the other power converter that is arranged in parallel, and improves the detection accuracy. <P>SOLUTION: This power converter comprises: an inverter, an AC output detector, a communication part, and a single operation prevention part. The single operation prevention part firstly detects a control signal transmitted to a power cable from the communication part via the AC output detector. Next, the single operation prevention part superposes a test pulse (Pt) on a waveform of an output voltage of a commercial power system, and the superposed waveform (W1) is transmitted to the inverter as a waveform (W0) of a control target. Succeeding to this, the single operation prevention part monitors the waveform of the output voltage of the inverter via the AC output detector. When the test pulse is detected from the actual voltage of the inverter via the AC output detector, the single operation prevention part stops the operation of the inverter, and blocks an output of the inverter. <P>COPYRIGHT: (C)2007,JPO&INPIT |
