| 摘要 |
PURPOSE:To increase the life of a fuel cell by supplying fuel gas and reaction air more than a specified rate by a specified amount when load increase is instructed, and by switching to current value control based on output current after cell temperature reaches the target operation temperature. CONSTITUTION:When load increase is instructed, fuel gas and reaction air are supplied more than a specified rate by a specified amount. After the fuel cell temperature reaches the target operation temperature, each operation of a fuel supply line 7, an air line 3, a fuel cell 1, and a power conversion line 4 are switched to current value control based on output current. The amount of reformed gas and that of reaction air supplied to the fuel cell 1 are supplied more than a specified rate by a specific amount, and hydrogen consumption rate and oxygen consumption rate are decreased than those in steady-state operation. Decrease in output voltage caused by low fuel cell temperature is compensated and overload operation is avoided. The life of the fuel cell 1 can be increased. |
