摘要:
A system for producing electric power from hydrogen and hydrogen from electric power, comprising: a reversible electric power-hydrogen conversion stage comprising a fuel cell stack to produce electric power from stored hydrogen and an electrolytic cell stack to produce hydrogen from electric power; a hydrogen pressure modification stage to modify the pressure of hydrogen supplied to or produced from the reversible electric power-hydrogen conversion stage; an electric power management and conditioning stage to condition electric power from/to the reversible electric power-hydrogen conversion stage; and a management stage to differentially manage the operation of the reversible electric power-hydrogen conversion stage, the hydrogen pressure modification stage and the electric power management and conditioning stage according to whether the system produces electric power from hydrogen or hydrogen from electric power and on a user-settable operation management strategy.
摘要:
The present invention relates to a method for operating a power grid, in particular a power grid of a watercraft, wherein the power grid is connected to a battery device for intermediate storage of energy, wherein the battery device comprises a plurality of sub-batteries and wherein a first sub-battery is operated in a charging mode in which the sub-battery is rechargeable to receive excess energy from the power grid, while a second sub-battery operates in a discharge mode in which the sub-battery can be discharged to output additional energy into the power grid. The invention further relates to an energy supply system, in particular for a watercraft, with a power grid which is connected to a battery device for intermediate storage of energy, wherein the battery device comprises a plurality of sub-batteries and is designed such that a first sub-battery can be operated in a charging mode, in which the sub-battery is rechargeable to receive excess energy from the power grid, while a second sub-battery can be operated in a discharge mode, in which the sub-battery can be discharged to output additional energy into the power grid.
摘要:
A fuel cell assembly comprising at least two fuel cells, each fuel cell in the fuel cell assembly having an anode and a cathode to provide for electrical interconnections with other fuel cells of the assembly or assembly output terminals wherein the electrical interconnections between a plurality of the fuel cells of the fuel cell assembly are configurable such that said plurality of fuel cells or a subset thereof are connectable without changing the spatial relationship between the fuel cells in at least two of; i) in series with one another; ii) in parallel with one another; or iii) disconnected from the assembly.
摘要:
An electrical power supply system has a fuel cell module and a battery. The fuel cell can be selectively connected to the battery system through a diode. The system preferably also has a current sensor and a controller adapted to close a contactor in a by-pass circuit around the diode after sensing a current flowing from the fuel cell through the diode. The system may also have a resistor and a contactor in another by-pass circuit around the diode. In a start-up method, a first contactor is closed to connect the fuel cell in parallel with the battery through the diode and one or more reactant pumps for the fuel cell are turned on. A current sensor is monitored for a signal indicating current flow through the diode. After a current is indicated, a by-pass circuit is provided around the diode.
摘要:
A fuel cell vehicle (10) comprises a motor (22), a fuel cell (42), a first DC/DC converter (50), and a first converter control unit (52). The first DC/DC converter (50) performs a boosting operation during the fuel cell vehicle (10) runs in a non-stationary state, and does not perform the boosting operation during the vehicle runs in a stationary state.
摘要:
The controller (185) of a fuel cell stack (151) in a vehicle (150) responds to lower demand to cause a diverter (172) to direct all air from the cathodes (19) except as required to generate sufficient power to limit cell voltage to a safe idle voltage threshold, cause storage in an energy storage system (201) sufficient to limit cell voltage to the idle voltage threshold unless SOC is too high, connects a voltage limiting load (220) to the stack sized to consume all power not consumed by auxiliary BOP, or, for longer idles, air-starves the stack and powers BOP from storage. In response to increase in a demand signal, the controller causes flow of all air to the cathodes. In response to an off signal (223) or a start signal (193) the controller causes a shutdown routine or a startup routine in each of which all generated power is stored to maintain fuel cell voltage below a threshold, or is consumed in the voltage limiting load.
摘要:
There are provided: a solid polymer power generation or electrolysis method that does not require injection of energy from the outside and maintenance of a high temperature, and is capable of converting carbon dioxide to a useful hydrocarbon while producing energy, controlling the production amounts of the hydrocarbons or the like and a ratio sorted by kind of the hydrocarbons, improving utilization efficiency of a product, and simplifying equipment for separation and recovery; and a system for implementing the solid polymer power generation or electrolysis method. Carbon dioxide is supplied to the side of one electrode 111 of a reactor 110 having a membrane electrode assembly 113, hydrogen is supplied to the side of the other electrode 112, and the amounts of the hydrocarbons produced per unit time and the ratio sorted by kind of the hydrocarbons are changed by controlling a power generation voltage of the reactor 110.