| 摘要 |
<P>PROBLEM TO BE SOLVED: To shorten the time taken until an actual pressure value of fuel gas in a fuel supply passage reaches a target pressure value, in a fuel cell system conducting feedback control of an on-off valve installed in the fuel supply passage. <P>SOLUTION: The fuel cell system 1 includes: a fuel cell 10; a fuel supply passage 31 for supplying fuel gas supplied from a fuel supply source 30 to the fuel cell 10; a circulation passage 32 for returning fuel off-gas exhausted from the fuel cell 10 to the fuel supply passage; the on-off valve 35 for adjusting a gas state upstream of the fuel supply passage 31 and for supplying it to the downstream side; a pressure sensor 43 installed in the prescribed position in the fuel supply passage 31; and a control means 4 for driving and controlling the on-off valve in a prescribed driving period. The control means 4 calculates proportional gain by using specific relational expression considering a driving period, and conducts the feedback control of the on-off valve 35 by using the proportional gain so as to bring the pressure value detected with the pressure sensor 43 close to the target pressure value. <P>COPYRIGHT: (C)2009,JPO&INPIT |
