Abstract: A regenerative fuel cell power system has a plurality of fuel cell power modules, a plurality of electrolysis modules, a water management system and a master controller. The master controller manages the temperature within the electrolysis system to prevent freezing through circulation of water from the water management system.

Abstract: A system and method are provided for monitoring the levels of combustible gas in a gas stream. The system includes means for controlling the relative humidity of the the gas stream to maintain a humidity level in the performance range of combustible gas sensors. A number techniques are illustrated for achieving the humidity control, including, secondary phase separations, mixing the gas with dry air and adjusting of the gas stream temperature.

Abstract: A modular power system having separately removable electrolysis and power modules, each with separate sets of connection ports, is disclosed. The connection port set of the electrolysis module is adapted for operable communication with a water supply, a hydrogen storage device, and the power module, and the connection port set of the power module is adapted for operable communication with the water supply, the hydrogen storage device, and the electrolysis module.

Abstract: A regenerative fuel cell system is provided having at least one hydrogen storage container fluidly coupled to at least one hydrogen generator and at least one power generator. Each power generator further includes a fuel cell fluidly coupled to the hydrogen storage container, an electric energy storage device, and an unregulated dc bus electrically connected to said fuel cell and said electric storage device. The system further provides for a health monitoring system for determining the occurrence of critical events which may necessitate the disabling of the system.

Abstract: A regenerative fuel cell system is provided having at least one hydrogen storage container fluidly coupled to at least one hydrogen generator and at least one power generator. Each power generator further includes a fuel cell fluidly coupled to the hydrogen storage container, an electric energy storage device, and an unregulated dc bus electrically connected to said fuel cell and said electric storage device. The system further provides for a health monitoring system for determining the occurrence of critical events which may necessitate the disabling of the system.

Abstract: A modular power system includes any number of electrolysis modules, power modules and hydrogen storage modules, and a communications bus in operable signal communication with each of the modules. Each module includes a local controller and a communications port in signal communication with the local controller. Each communications port is in signal communication with the communications bus, and each local controller controls the operation of each respective module. Each module is separately disconnectable from the communications bus and separately removable from the modular power system.

Abstract: A system and method are provided for monitoring the levels of combustible gas in a gas stream. The system includes means for controlling the relative humidity of the the gas stream to maintain a humidity level in the performance range of combustible gas sensors. A number techniques are illustrated for achieving the humidity control, including, secondary phase separations, mixing the gas with dry air and adjusting of the gas stream temperature.

Abstract: A modular power system having separately removable electrolysis and power modules, each with separate sets of connection ports, is disclosed. The connection port set of the electrolysis module is adapted for operable communication with a water supply, a hydrogen storage device, and the power module, and the connection port set of the power module is adapted for operable communication with the water supply, the hydrogen storage device, and the electrolysis module.