摘要:
A fuel cell system including a fuel cell that receives a supply of an anode gas and a cathode gas and generates power is provided. The fuel cell system includes a water content calculation unit configured to calculate a water content of the fuel cell, an internal impedance calculation unit configured to calculate an internal impedance of the fuel cell, and a starting temperature calculation unit configured to calculate a fuel cell temperature at a start of the system, based on the water content of the fuel cell as of a last time the system was stopped, and the internal impedance of the fuel cell at the start of the system.
摘要:
An anode non-circulation type fuel cell sets an anode upper limit pressure and an anode lower limit pressure, and sets an anode pressure increase rate based on at least a detected temperature of a fuel cell. The system controls the supply of an anode gas to the fuel cell so as to repeat pressure increase and pressure decrease. The pressure increase is conducted by supplying the anode gas to the anode upper limit pressure at the anode pressure increase rate. The pressure decrease is conducted by restricting the supply of the anode gas to the anode lower limit pressure. When the detected temperature of the fuel cell is lower than a predetermined temperature, the system sets the anode pressure increase rate at a slower rate than when the temperature of the fuel cell is equal to or higher than the predetermined temperature.
摘要:
A system for adjusting temperature of cooling-liquid comprises: a radiator; a cooling-liquid circulation flow-channel; a radiator bypass flow-channel; a thermostat valve; and a valve bypass flow-channel through which the cooling-liquid of the radiator bypass flow-channel is allowed to flow in a predetermined amount even if the thermostat valve is completely closed.
摘要:
A wet state control device for fuel cell includes a priority control unit for preferentially controlling either one of a pressure and a flow rate of cathode gas when a wet state of a fuel cell is adjusted, a water temperature control unit for controlling a temperature of cooling water when the wet state of the fuel cell is not completely adjustable by a control of the priority control unit, and a complementary control unit for controlling the other of the pressure and the flow rate of the cathode gas to complement a response delay of the water temperature control unit.
摘要:
A system for adjusting temperature of cooling-liquid comprises: a radiator; a cooling-liquid circulation flow-channel; a radiator bypass flow-channel; a thermostat valve; and a valve bypass flow-channel through which the cooling-liquid of the radiator bypass flow-channel is allowed to flow in a predetermined amount even if the thermostat valve is completely closed.
摘要:
A wet state control device for fuel cell includes a priority control unit for preferentially controlling either one of a pressure and a flow rate of cathode gas when a wet state of a fuel cell is adjusted, a water temperature control unit for controlling a temperature of cooling water when the wet state of the fuel cell is not completely adjustable by a control of the priority control unit, and a complementary control unit for controlling the other of the pressure and the flow rate of the cathode gas to complement a response delay of the water temperature control unit.
摘要:
A power generation control device 3 for a fuel cell 1 of the present invention comprises: a target generated power calculating unit 31 configured to calculate target generated power of the fuel cell 1, based on a load condition of an electrical load device connected to the fuel cell 1; a target generated current calculating unit 34 configured to calculate a target generated current to be taken out of the fuel cell 1, based on the target generated power; a current change rate limit value calculating unit 35 configured to calculate a limit value for a rate of change in the target generated current, based on an operating condition parameter correlated with an operating temperature of the fuel cell 1; and a current limiting unit 37 configured to limit the target generated current so that the rate of change in the target generated current does not exceed the limit value calculated by the current change rate limit value calculating unit 35.
摘要:
A fuel cell system of a type that uses an accessory to supply fuel gas and oxidant gas to a fuel cell to generate electric power is disclosed. The fuel cell system includes a load parameter detector that detects a load parameter of the accessory. An actual accessory power computing device computes the electric power actually consumed by the accessory based on the detected load parameter. A steady accessory power computing device computes a steady accessory electric power consumption by the accessory that would be needed for supplying the fuel cell with gas to generate an amount of required electric power from the fuel cell system based on the steady electric power consumption characteristics of the accessory. An accessory power correcting device computes an electric power correction quantity such that the correction quantity may be combined with the steady accessory power to approach the actual accessory electric power consumption and the accessory power correcting device corrects the steady accessory electric power consumption based on the electric power correction quantity. A power generation controller controls the power generation of the fuel cell system based upon the required electric power to be generated by the fuel cell system and upon the computed steady accessory electric power consumption corrected by the accessory power correcting device.
摘要:
A power generation control device 3 for a fuel cell 1 of the present invention comprises: a target generated power calculating unit 31 configured to calculate target generated power of the fuel cell 1, based on a load condition of an electrical load device connected to the fuel cell 1; a target generated current calculating unit 34 configured to calculate a target generated current to be taken out of the fuel cell 1, based on the target generated power; a current change rate limit value calculating unit 35 configured to calculate a limit value for a rate of change in the target generated current, based on an operating condition parameter correlated with an operating temperature of the fuel cell 1; and a current limiting unit 37 configured to limit the target generated current so that the rate of change in the target generated current does not exceed the limit value calculated by the current change rate limit value calculating unit 35.
摘要:
In a fuel cell system which executes a stop process of stopping an output from a fuel cell when a required power generation amount for the fuel cell is smaller than a predetermined power generation amount and supplies oxidant during a stop process period, fuel gas is intermittently supplied to a fuel electrode at a basic supply interval, which is set in advance and at which carbon dioxide is not generated in an oxidant electrode, during the stop process period.