| 摘要 |
Provided is a method for load following operation of a fuel cell system in which reliable reforming and the prevention of flow blockage and anode degradation are possible. Functions F = f(P) and P = f -1 (F) of an electrical output P and a fuel flow rate F required to output P are beforehand obtained. Reforming catalyst layer temperatures T j and reformable fuel flow rates G j at T j are predetermined. G j corresponding to the maximum T j that is equal to or less than the measured temperature T of the catalyst layer is set as F R . When F R < F min (minimum F), electric power generation is stopped. When F R ‰¥ F min , 1 is performed if an output demand value P D ‰¤ a maximum output P M , and 2 is performed if P D > P M . 1) In the case of f(P D ) ‰¤ F R , the output is set to P D and the fuel flow rate is set to f(P D ). In the case of f(P D ) > F R , the output is set to a value that is less than P D and the maximum among P calculated by P = f -1 (FR), and the fuel flow rate is set to F R . 2) In the case of f(P M ) ‰¤ F R , the output is set to P M and the fuel flow rate is set to f(P M ). In the case of f(P M ) > F R , the output is set to the maximum value of P calculated from P = f -1 (F R ), and the fuel flow rate is set to F R . |
