| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a system interconnection device which can perform MPPT control while suppressing an increase in current detection parts.SOLUTION: A system interconnection device related to one embodiment comprises a voltage conversion part, a power conversion part, a detection part and a control part. The system interconnection device comprises the voltage conversion part, the power conversion part, a current detection part, a voltage detection part, and the control part. The voltage conversion part: couples DC powers outputted from a plurality of DC-DC converters which step up or step down output voltages of a plurality of DC power supplies; and outputs it. The power conversion part converts DC power outputted from the voltage conversion part into AC power, and outputs it to a power system. The control part controls a plurality of the DC-DC converters so that each of the output powers of a plurality of the DC power supplies becomes maximum on the basis of a current and a voltage which are detected by the current detection part and the voltage detection part.</p> |
