The present invention is a hydrogen exhaust device for fuel cell. A tail gas discharge device for a fuel cell system includes a steam trap, a buffer solenoid valve, a buffer tank and a drain solenoid valve. The steam trap can collect water from wet hydrogen. The buffer tank is a hollow cavity structure such as a tank. Preferably, the steam trap has an upper cover, a main body, a lower cover and a filter. The upper cover has a wet hydrogen inlet, a pressure sensor, a dry hydrogen outlet and a temperature sensor. The lower cover has a liquid storage cavity and a filter support part. The filter has a filter filler and a filter intake channel.

An air pressure in fuel cells of an electric power generation system comprising a fuel cell stack (PCS) is raised with a pressurized air cooling system with recirculation to values at least two times greater than typical values for an PCS with air cooling. The FCS is either placed in a high-pressure chamber to which air is injected, or air outgoing from the FCS is redirected via a duct back to the FCS inlet and a portion of pressurized fresh air is added thereto. The chamber or the duct is provided with a radiator by means of which circulating air heat is transferred into the external environment. Air recirculation in the chamber or the duct is effected by means of fans for cooling fuel cells. Useful capacity of electric power generation systems based on fuel cells is raised significantly, the necessity of using a humidifier is excluded, and the temperature range of fuel cell operation is expanded.

A large-scale proton exchange membrane fuel cell power station process system includes a distributed cell stack module, a modular fuel supply system, a modular oxidant supply system, a modular cooling system, a power transmission and inverter system, and a power station master system. The distributed cell stack module is a power station core power generation device, the modular fuel supply system serves as a fuel supply system for the distributed cell stack module, and the modular oxidant supply system serves as an oxidant supply system for the distributed cell stack module; the modular cooling system performs cooling and heat exchange of the distributed cell stack module, the power transmission and inverter system converts, transmits and allocates a power of the distributed cell stack module, and the power station master system controls and manages each of the systems and the modules. The process system is unattended during peak electricity consumption.

A fuel cell system that generates electric power by supplying anode gas and cathode gas to a fuel cell includes a control valve adapted to control the pressure of the anode gas to be supplied to the fuel cell; a buffer unit adapted to store the anode-off gas to be discharged from the fuel cell; a pulsation operation unit adapted to control the control valve in order to periodically increase and decrease the pressure of the anode gas at a specific width of the pulsation; and a pulsation width correcting unit adapted to correct the width of the pulsation on the basis of the temperature of the buffer unit.

An all mechanically controlled, non-venting pressure control system for liquid hydrogen and liquid oxygen cryogenic tanks that requires no electrical control while managing disparate, non-stoichiometric reactant boil-off rates is provided. The pressure control system allows for the passive and repeatable stoichiometric consumption of hydrogen and oxygen boil-off from cryogenic tanks to form liquid water, while preventing the liquid hydrogen and liquid oxygen cryogenic tanks from overpressurizing and venting to the external environment. More particularly, in response to an overpressure condition in a first reactant reservoir, a backpressure regulator is opened, providing the overpressure first reactant to a fuel cell or other consumer, and providing a pilot signal to open a supply line from a second reactant reservoir to the consumer. Whether the second reactant is supplied from the second reactant reservoir as gas or a liquid is determined based on the pressure within the second reactant reservoir.

A hydrogen supply system that supplies hydrogen gas to a fuel cell and causes the fuel cell to generate electricity includes a plurality of hydrogen tanks that each store hydrogen gas, and a hydrogen gas supply path that supplies the hydrogen gas to the fuel cell from each of the plurality of hydrogen tanks. At least one hydrogen tank of the plurality of hydrogen tanks is a first reserve tank that is connected to a hydrogen gas collecting pipe or a hydrogen gas recovery pipe, and that stores hydrogen gas that was not used in generating electricity in the fuel cell.

One aspect of the present disclosure is directed to a fuel cell power system. The system may include one or more fuel cells configured to generate electric power and a compressor configured to supply compressed air to the one or more fuel cells. The system may further include one or more sensors. The sensors may be configured to generate a signal indicative of at least one measured parameter of air flow across the one or more fuel cells. The system may also include a controller in communication with the one or more fuel cells, the compressor, and the sensors. The controller may be configured to determine a desired pressure drop based on at least one calculated parameter, determine a control command for the compressor based on the desired pressure drop, and adjust the control command based on a feedback gain parameter and a feed forward gain parameter.

A fuel cell system (200), wherein the fuel cell system (200) has: a) a fuel cell stack (10), b) an anode gas path (20) which fluidically communicates with the fuel cell stack (10) and which serves for supplying anode gas from an anode gas store (22) to the fuel cell stack (10), c) a cathode gas path (30) which fluidically communicates with the fuel cell stack (10) and which serves for supplying cathode gas from a cathode gas store (32) to the fuel cell stack (10), d) a cooling fluid path (40) which fluidically communicates with the fuel cell stack (10) and which serves for supplying cooling fluid from a cooling fluid store (42) to the fuel cell stack (10), e) a vibration generator (60) which is in data-transmitting communication with a control unit (50) and which serves for setting the fuel cell stack (10) into a vibrating state, and f) the control unit (50) for actuating the vibration generator (60) in order to set the fuel cell stack (10) into the vibrating state by means of the vibration generator (60).

The present disclosure relates to systems and methods of using a proportional control valve in a fuel cell stack system. The fuel cell stack system, may comprise a fuel cell stack including an anode with an anode inlet and an anode outlet, and a cathode with a cathode inlet and a cathode outlet, and a control valve, which controls the flow of a fuel into the anode. The flow of fuel may be based on a pressure differential measured across any two of the anode inlet, the anode outlet, the cathode inlet, and the cathode outlet.

The purpose of the present invention is to provide fuel cell system capable of stably executing differential pressure control and having a simplified configuration, and method for controlling the same. Fuel cell system equipped with fuel cell, a turbocharger, exhaust fuel gas line, exhaust oxidizing gas line, combustion gas supply line for supplying combustion gas discharged from a combustor to a turbine, oxidizing gas supply line for supplying oxidizing gas compressed by a compressor to cathode, a regulator valve provided to the exhaust fuel gas line, and a control unit for controlling the differential pressure between the pressure of the cathode of the fuel cell and the pressure of the anode thereof by controlling the regulator valve, wherein the exhaust oxidizing gas line is not provided with venting system for discharging exhaust oxidizing gas outside the system.