| 摘要 |
<P>PROBLEM TO BE SOLVED: To enable continuously stable power supply by charging a battery with part of power produced in photovoltaic equipment interconnecting with a commercial power system and combining the power with power from a solar cell. <P>SOLUTION: System-interconnected photovoltaic equipment 1 is provided with a switch 10 disposed between a solar cell 3 and a junction box 4 to switch a power supply from the solar cell 3 between the junction box 4 and a separate power supply route 9. The separate power supply route 9 includes a transformer 11 connected to the switch 10, a charger 13 and an inverter 14 connected thereto directly and via a battery 12. The inverter 14 is connected with a controller 16 for detecting the amount of charge of the battery 12, and alternately selectively connecting either of the separate power supply route 9 and a distribution board 6 to a power load to supply power from either or both of the battery 12 and the solar cell 3 to the power load through control of the switch 10 and the devices 11-14 in the separate power supply route 9 or supply power from a commercial power system 7 to the power load 15. <P>COPYRIGHT: (C)2013,JPO&INPIT |
