FUEL SUPPLY SYSTEM, FUEL CELL SYSTEM, AND METHOD FOR RUNNING EACH

摘要

The present invention enables the supply of an appropriate amount of gaseous fuel even if the composition of the gaseous fuel changes. A composition-independent flow rate meter (4) that can measure flow rate independently from the composition of gaseous fuel is disposed in series with a thermal flow rate meter (4) in the supply pathway of gaseous fuel. When the value measured by the thermal flow rate meter (3) and the value measured by the composition-independent flow rate meter (4) diverge by at least a certain amount, it is determined that there is an abnormal state, and a conversion factor with respect to the value measured by the thermal flow rate meter (3) is set. On the basis of the set conversion factor, the composition of the gaseous fuel is inferred, and on the basis of the inferred composition the target supply amount of gaseous fuel is corrected and controlled.