| 摘要 |
PURPOSE:To follow the command of increasing output power without causing a gas shortage, and to prevent degradation in the performance of a fuel cell by batch controlling the d.c. output of the fuel cell and the a.c. output of a power converter based on the set power value generated by a power set value control part after receiving an external load command. CONSTITUTION:The variation speed of detected current is calculated by a power variation speed calculating part 13 during stationary operation and the calculation result is referred to a set value. The control signal 13S changing in proportion to the change in an output current If is output to a power set value control part 15. A power converter 4 and a flow calculation control part 6 are batch controlled by a power set value 15S output by a power set value control part 15 in proportion to the signal 13S to control a situation so that the a.c. output of the converter 4 agrees with an external load command 9S. The d.c. current required by the converter 4 is output by a cell 1 by controlling the openings of main control valves 7A, 7B, 7F, and 7S by the flow control part 6 in proportion to the command 9S, and stable stationary operation is thus carried out. |
