| 摘要 |
PROBLEM TO BE SOLVED: To enable a stable start operating and increase a power generating time and total generated energy. SOLUTION: The solar cell 32 of a power conditioner device supplies power to an AC power supply 51 via a DC power supply circuit 33, an inverter circuit 34 and a filter circuit 35. At the time of start, a control circuit 37 sets a reference voltage VD1* in accordance with the output voltage VD1 of the solar cell 32, sets a reference current ID1* in accordance with the reference voltage VD1* and the output voltage VD1 so as to limit the reference current ID1* within the range of a reference current upper limit ID1max, and controls the DC power supply circuit 33 in accordance with the reference current ID1*. As the start operation is practiced in accordance with the actual output voltage VD1, power supply loss does not occur and a stable operation can be practiced. Further, even if the output voltage VD1 is lowered by the fluctuation of insolation, as the excessive reference current is not set, the power loss during the starting operation can be avoided. |
