| 摘要 |
PURPOSE: To provide a power converting equipment capable of stably continuing the operation of a fuel cell without stopping the power supply to other unit after one of the units fails, in the case where the power is being supplied with multiple outputs from the output of the fuel cell. CONSTITUTION: A DC load 5 is connected to the output of a fuel cell 1 through a DC converting equipment 3, and also an AC load 4 linked with a commercial power supply 6 is connected through an AC power converting equipment 2 having an AC converting section 20, a linked reactor 22, a circuit breaker 21, an anomaly detecting section 23, a protecting & controlling circuit 24 and a drive circuit 25. An input overvoltage preventing circuit 26 comprising a high- speed opening type short-circuit switch 264 connected in parallel to a reverse- current preventing diode 263 is connected to the input side of the AC power converting equipment 2. Accordingly, any rise in the output voltage of the fuel cell 1 can be prevented thereby permitting power supply from the fuel cell 1 to a DC converting equipment 3 even when the AC power converting equipment 2 stops. |
