| 摘要 |
PURPOSE:To avoid the deterioration and characteristic reduction of a fuel cell by compensating the shortage of the output current of a fuel cell stack when a load rise is commanded. CONSTITUTION:A load follow-up compensating means 11 is provided between a fuel cell stack 1 and a power converter 4, and a capacitor 12 is charged during the light-load operation. Changes of the output voltage and output current of the fuel cell stack 1 transiently generated by a load rise command are detected by a compensation controller 15 via the collation with the planned voltage/current characteristics data, a semiconductor switch 13 is closed, and the discharge current ic of the capacitor 12 is fed to the power converter 4 as the compensation current. The delay of the load follow-up caused by the gas shortage of the fuel cell stack 1 is compensated. |
