| 摘要 |
Provided is a method of load following operation of a fuel cell system, which can implement assured property modifications and prevent the blocking of a channel and the deterioration of an anode. Functions F=f(P) and P=f-1(F) of the cell output P and a flow rate F of a carbon hydride-based fuel which is necessary for outputting P are determined in advance. A flow rate FR of fuel which can be modified is determined from the measured temperature of a modified catalyst layer. If FR<Fmin (the minimum value of the flow rate of fuel), power generation is stopped, and if FR=Fmin, an operation (1) is performed when an output requirement value PD is the same as or lower than the maximum output PM and an operation (2) is performed when PD>PM. The operation (1) is such that if f(PD)=FR, the cell output is PD and the flow rate of fuel to be supplied is f(PD), and if f(PD)>FR, the cell output is the maximum value of P calculated from P=f-1(FR), which is less than PD, and the flow rate of fuel to be supplied is FR. The operation (2) is such that if f(PM)=FR, the cell output is PM and the flow rate of fuel to be supplied is f(PM), and if f(PM)>FR, the cell output is the maximum value of P calculated from P=f-1(FR) and the flow rate of fuel is FR. Also provided is a fuel cell system suitable for this method. |
