| 摘要 |
PURPOSE:To prevent a power reverse flow surely without using a reverse power relay by rectifying and then connecting a received power in parallel with a fuel cell output and by supplying an inverter with said received power. CONSTITUTION:In a power consumption plant 1, a fuel cell 2 is provided as a main power supply and a power receiver 4 for receiving AC power supplied from a general electric power company 3 is provided as an auxiliary power supply. After the AC power of said power receiver 4 has been rectifier by a rectifier 7, said power is connected in parallel with the output of said fuel cell 2 to flow together. Then, said AC power is inputted to an inverter 8 to be converted into AC and thereafter supplied to a consumption side AC output end 6. Not only said rectifier 7 but also said fuel cell 2 have the function of preventing a power reverse flow. Therefore, even if outputs of both of them are connected in parallel, it is unnecessary to use a reverse power relay. |
