Patent application number | Description | Published |
20100304235 | SOLID OXIDE FUEL CELL DEVICE - A solid oxide fuel cell (SOFC) device comprises a fuel cell assembly, a reformer, a fuel gas supply device, a water supply device, a reforming air supply device, a power generating air supply device, an ignition device, and a control device, the control device controls the fuel gas supply device, the water supply device, the reforming air supply device, the power generating air supply device, and the ignition device to conduct a combustion operation, then supply the fuel gas and the reforming air into the reformer to conduct a partial oxidation reforming reaction (POX) operation, then supply the fuel gas, the reforming air and water into the reformer to conduct an auto-thermal reforming reaction (ATR) operation, and then supply the fuel gas and water into the reformer to conduct a steam reforming reaction (SR) operation, thereby starting the solid oxide fuel cell device, and the control device controls the fuel gas supply device to hold constant the supply flow rate of fuel gas during a predetermined interval, controls the ignition device to ignite the fuel gas at the middle of the predetermined interval, and controls the fuel gas supply device to reduce the supply flow rate of fuel gas after an elapse of the predetermined interval. | 12-02-2010 |
20100304241 | SOLID OXIDE FUEL CELL DEVICE - The present invention comprises a fuel cell assembly, a reformer, a fuel flow rate regulator unit for supplying fuel gas to the reformer, a reforming air supply device, a power generating air supply device, and a control unit for igniting fuel gas using an ignition device and conducting a combustion operation causing the fuel gas to combust using power generating air, then sequentially implementing a POX operation, ATR operation, and SR operation; whereby the control section starts the supply of fuel gas, reforming air, and power generating air, then controls the fuel gas supply device, the reforming air supply device, and the power generating air supply device to hold constant the respective supply flow rates of fuel gas, reforming air, and power generating air, without variation, in the combustion operating region in which fuel gas is ignited by the ignition device and combusted. | 12-02-2010 |
20100304242 | FUEL CELL DEVICE - The fuel cell device has a control device for conducting, at the time of startup, a partial oxidation reforming reaction (POX) inside the reformer, then an auto-thermal reforming reaction (ATR) inside the reformer, then a steam reforming reaction (SR) inside the reformer; a water supply device is provided with a pump for intermittently supplying extremely small amounts of water to the reformer using pulsed control; the control device controls the fuel supply device, the reforming air supply device, and the water supply device to respectively supply target supply flow rates of fuel, reforming air, and water based on the outputs of various sensors; and, in the ATR region, the control device suppresses changes in the flow rate of fuel supplied by the fuel supply device during at least a predetermined interval following the supply of water by the pump. | 12-02-2010 |
20100304243 | SOLID OXIDE FUEL CELL DEVICE - A solid oxide fuel cell (SOFC) device comprises a fuel cell assembly, a reformer, a fuel gas supply device, a reforming air supply device, a power generating air supply device, an ignition device, a temperature detection devices for detecting the temperature caused by combustion of fuel gas, and a control section for sequentially conducting a combustion operation in which fuel gas is ignited by the ignition device and combusted using the power generating air, a POX operation, an ATR operation, and an SR combination, wherein the control section determines that a flameout has occurred when the amount by which the temperature caused by combustion of fuel gas and detected by the temperature detection device drops within a predetermined time is equal to or greater than a preset, predetermined temperature drop threshold, and the predetermined temperature drop threshold is set as a plurality of predetermined temperature drop thresholds in accordance with temperature bands caused by the combustion of fuel gas, the lower the temperature induced by the combustion of fuel gas, the higher is the temperature drop threshold. | 12-02-2010 |
20100304244 | SOLID OXIDE FUEL CELL DEVICE - 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 ( | 12-02-2010 |
20100304245 | SOLID OXIDE FUEL CELL DEVICE - To provide a solid oxide fuel cell device capable of stably increasing the temperature of a fuel cell units and smoothly starting electrical generation. The present invention is a solid oxide fuel cell device ( | 12-02-2010 |
20100304249 | SOLID OXIDE FUEL CELL DEVICE - 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 ( | 12-02-2010 |
20110076576 | SOLID OXIDE FUEL CELL DEVICE - The present invention is a solid oxide fuel cell device with a load following function for changing a fuel supply rate in response to a load defined as a required power determined by demand power. The solid oxide fuel cell device of the present invention comprises a fuel module having a fuel cell stack composed of a plurality of solid oxide fuel cells and a reformer for reforming fuel and supplying the fuel to the fuel cells; an inverter for receiving electrical power generated by the fuel cell module and converting the power to alternating power; a command power value setting device for setting a command power value to be generated by the fuel cell module based on the amount of load; a fuel control device for determining a fuel supply rate supplied to the fuel cells and supplying the fuel so as to generate the above command power value; an inverter permitted power value instruction device for instructing to the inverter an inverter permitted power value corresponding to the above command power value, which is the permitted amount of power to be extracted from the fuel cell module, after the fuel has been supplied to the fuel cells by the fuel control device; and an inverter permitted power value change device for changing the amount of change per unit time in the next inverter permitted power value and outputting the amount of change unit time to the inverter permitted power value instruction device; wherein the inverter permitted power value change device presets a plurality of proportionality characteristics indicating the differing multiple amounts of change per unit time, selecting one proportionality characteristic from among multiple proportionality characteristics based on the status of load, changing the amount of change per unit time in the next inverter permitted power value by using the selected proportionality characteristic. | 03-31-2011 |
20110076577 | SOLID OXIDE FUEL CELL DEVICE - The present invention is a solid oxide fuel cell device with a load following function for changing a fuel supply rate in response to a load defined as a required power determined by demand power. The solid oxide fuel cell device comprises a fuel cell module having a fuel cell stack composed of a plurality of solid oxide fuel cells and a reformer for reforming fuel and supplying the fuel to the fuel cells; an inverter for receiving electrical power generated by the fuel cell module and converting the power to alternating power; a command power value setting device for setting a command power value to be generated by the fuel cell module based on the amount of load; a fuel control device for determining an fuel supply rate and supplying the fuel by the fuel supply rate to the fuel cells so as to generate the command power value; an inverter permitted power value instruction device for instructing to the inverter an inverter permitted power value corresponding to the command power value, which is the permitted amount of power to be extracted from the fuel cell module, after the fuel has been supplied by the fuel supply rate to the fuel cells by the fuel control device; and an inverter permitted power value change device for changing an amount of change per unit time in a next inverter permitted power value based on a temperature inside the fuel cell module and outputting the amount of change per unit time to the inverter permitted power value instruction device; wherein the inverter permitted power value change device changes the amount of change per unit time in the inverter permitted power value to be larger, the higher the temperature is, in a temperature region equal to or lower than a first predetermined temperature, and to be smaller, the higher the temperature is, in a temperature region equal to or higher than a second predetermined temperature. | 03-31-2011 |
20110076578 | SOLID OXIDE FUEL CELL DEVICE - The present invention is a solid oxide fuel cell device ( | 03-31-2011 |
20110217603 | SOLID OXIDE FUEL CELL - To provide a solid oxide fuel cell in which the reformer is compact but is capable of supplying an appropriate quantity of fuel. The present invention is a solid oxide fuel cell ( | 09-08-2011 |
20140234736 | SOLID OXIDE FUEL CELL DEVICE - The present invention is a solid oxide fuel cell device with a load following function for changing a fuel supply rate in response to a load defined as a required power determined by demand power. The solid oxide fuel cell device comprises a fuel cell module having a fuel cell stack composed of a plurality of solid oxide fuel cells and a reformer for reforming fuel and supplying the fuel to the fuel cells; an inverter for receiving electrical power generated by the fuel cell module and converting the power to alternating power; a command power value setting device for setting a command power value to be generated by the fuel cell module based on the amount of load; a fuel control device for determining an fuel supply rate and supplying the fuel by the fuel supply rate to the fuel cells so as to generate the command power value; an inverter permitted power value instruction device for instructing to the inverter an inverter permitted power value corresponding to the command power value, which is the permitted amount of power to be extracted from the fuel cell module, after the fuel has been supplied by the fuel supply rate to the fuel cells by the fuel control device; and an inverter permitted power value change device for changing an amount of change per unit time in a next inverter permitted power value based on a temperature inside the fuel cell module and outputting the amount of change per unit time to the inverter permitted power value instruction device; wherein the inverter permitted power value change device changes the amount of change per unit time in the inverter permitted power value to be larger, the higher the temperature is, in a temperature region equal to or lower than a first predetermined temperature, and to be smaller, the higher the temperature is, in a temperature region equal to or higher than a second predetermined temperature. | 08-21-2014 |