Solid oxide fuel cell device

摘要

To provide a solid oxide fuel cell device capable of smooth transition from a startup state to an electrical generating state. The present invention is a solid oxide fuel cell device (1) for generating electricity, having a fuel cell module (2); a reformer (20), a fuel supply device (38); a water supply device (28), a generating oxidant gas supply device (45), and a controller (110) for controlling the fuel supply device and water supply device at the time of startup when the fuel cell module solid oxide fuel cell unit is raised to a temperature at which electrical generation is possible, inducing in the reformer a SR in which only a steam reforming reaction occurs; wherein the control section maintains the fuel supply flow rate in the SR immediately prior to electrical generation at an electrical generation standby fuel supply flow rate determined according to solid oxide fuel module usage conditions and smaller than the fuel supply flow rate at the time of SR startup.