| 摘要 |
The invention relates to a fuel cell device arrangement for producing electrical energy, comprising at least one fuel cell anode 100 and cathode 102, an electrolyte 104 for conveying ions between the anode and the cathode and a passage 108 separate from the electrolyte for the electrons travelling from the anode to the cathode. For the fuel cell device is realised a control arrangement for preventing the formation of carbon, comprising: calculation means 110 for calculating one or more thermodynamic equilibrium models based on the thermodynamic equilibriums of chemical reactions for the feedback 109 recirculation of fuel, and means 110, 112 for implementing recirculation by recirculating fuel in a feedback arrangement through the fuel cell anode 100, for producing measurement values in recirculation, at least from the electric current and the fuel flow rate, for determining the composition of the fuel through calculation, for calculating the conversion values set on the basis of the thermodynamic equilibrium model for the fuel to be recirculated by using the said measurement values and fuel composition, and where necessary, for repeating the said calculation to produce the conversion values by means of which the calculation of the fuel composition can be determined to be converged with sufficient accuracy, and by using which conversion values the operation of the fuel cell device can be set to remain within the safety limits according to the thermodynamic equilibrium model. |
