Patent ID: 8546029

Claim:
A solid oxide fuel cell system for generating electricity using air and reformed fuel comprising: a reformer that reforms fuel; a fuel supply device that supplies the fuel to the reformer; a reforming air supply device that supplies reforming air to the reformer; a water supply device that supplies water to the reformer; a fuel supply quantity sensor that detects an actual quantity of fuel being supplied to the reformer by the fuel supply device; a fuel cell module that generates electricity using the reformed fuel; and a control device programed to control the fuel supply device, the reforming air supply device, and the water supply device so that target quantities of fuel, reforming air, and water are supplied into the reformer; wherein the control device is programed to control the fuel supply device so that the actual quantity of fuel being supplied, which is detected by the fuel supply quantity sensor, matches the target quantity of fuel supply, and the controller is programed to control the fuel supply device, while the reforming air supply device is supplying the reforming air to the reformer, so that the actual quantity of fuel being supplied tracks the target quantity of fuel supply more rapidly as a quantity of reforming air being supplied to the reformer increases.