초록 ▼

A power-supply system involving system interconnection includes a plurality of AC modules, each of which includes a solar cell module and an inverter unit which outputs a single-phase alternating current. The AC modules are connected to the single-phase three-wire distribution line such that the num

A power-supply system involving system interconnection includes a plurality of AC modules, each of which includes a solar cell module and an inverter unit which outputs a single-phase alternating current. The AC modules are connected to the single-phase three-wire distribution line such that the number of AC modules connected to the outer conductor R is the same as the number of AC modules connected to the outer conductor T. Each AC module has three junction pole pieces. Adjacent AC modules are connected to each other via a connecting cable connected to the junction pole pieces. Each AC module has a change-over circuit so as to be selectively connected to one of the outer conductors R or T. The power-supply system further includes an independent operation control device for independently operating the AC modules when the connection between the AC modules and the commercial electric power system is cut.

대표청구항 ▼

[ What is claimed is:] [1.] A power supply system connectable to a commercial electric power system having a standard AC frequency and voltage, the power-supply system comprising:at least one AC module each of which includes a solar cell module producing DC current and an inverter unit which outputs

[ What is claimed is:] [1.] A power supply system connectable to a commercial electric power system having a standard AC frequency and voltage, the power-supply system comprising:at least one AC module each of which includes a solar cell module producing DC current and an inverter unit which outputs a single-phase alternating current having a frequency and voltage that substantially matches the standard AC frequency and voltage;said at least one AC module is connected to a single-phase three-wire distribution line including a neutral conductor and two outer conductors R and T; andan independent operation control device for independently operating said least one AC module independent of the commercial electric power system while maintaining the output at a frequency and voltage that substantially matches the standard AC frequency and voltage when a connection between said at least one AC module and the commercial electric power system is cut.