| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a system interconnection system capable of easily increasing and decreasing the number of solar cells. <P>SOLUTION: A system interconnection device includes a plurality of booster control circuits 42a to 42c of which performs MPPT control in which each of solar cells 1a to 1c is operated such that the output power becomes a maximum by changing a booster ratio, and booster ratio constant control in which the output voltages of the solar cells 1a to 1c are operated under a constant booster ratio or voltage constant control in which booster circuits 41a to 41c are operated such that the output voltages of the solar cells 1a to 1c are kept constant. Each of the booster control circuits 42a to 42c outputs a first signal indicating that the booster control circuit is under the MPPT control when performing MPPT control. When receiving the first signal from other booster control circuit 42b or 42c, the booster ratio constant control or voltage constant control is performed. <P>COPYRIGHT: (C)2012,JPO&INPIT |
