NOVELTY - A current output of deadened hydrogen fuel cell receiving supply of hydrogen produced by hydrogen generator is regulated by, moving volume of hydrogen from hydrogen generator to fuel cell; determining target output current for fuel cell; operating hydrogen generator; and adjusting amount of hydrogen consumed by fuel cell if pressure of hydrogen differs from target pressure.    USE - For regulating a current output of a deadened hydrogen fuel cell receiving a supply of hydrogen produced by a hydrogen generator.    ADVANTAGE - The inventive method more efficiently integrates the hydrogen processing control requirements of the fuel cells and the hydrogen generator to minimize the negative consequences of hydrogen pressure fluctuations.    DETAILED DESCRIPTION - Regulation of a current output of a deadened hydrogen fuel cell (10) receiving a supply of hydrogen produced by a hydrogen generator (12) comprises moving a volume of the hydrogen in a flow path from the hydrogen generator to the fuel cell, where the volume of the hydrogen has a target pressure value Pset; determining a target output current iset for the fuel cell; operating the hydrogen generator at a hydrogen output level enough to enable the fuel cell to produce a current approximating the target output current iset; measuring the pressure of the volume of hydrogen at a location in the flow path; and if the pressure measured differs from pset, adjusting the amount of hydrogen consumed by the fuel cell until the pressure of the volume hydrogen approximates pset.    INDEPENDENT CLAIMS are also included for:    (a) a system for regulating the current output of a deadened hydrogen fuel cell receiving a supply of hydrogen produced by a hydrogen generator, comprising a hydrogen delivery vessel disposed between the hydrogen generator and the fuel cell for delivering a flow of hydrogen from the hydrogen generator to the fuel cell; a pressure sensor (16) in the delivery vessel for measuring the pressure of the hydrogen; a first controller receiving input from the pressure sensor, where the first controller generates a hydrogen consumption control command; a current sensor for measuring the current produced by the fuel cell; and a second controller receiving input from the current sensor, where the second controller generates a fuel supply control command, the first controller is connected to the fuel cell to regulate the amount of hydrogen consumed by the fuel cell, and the second controller is connected to the hydrogen generator to regulate the amount of hydrogen produced by the hydrogen generator; and    (b) a fuel cell control system (8), comprising a deadened hydrogen fuel cell; a hydrogen generator for delivering a supply of hydrogen to the fuel cell; a hydrogen delivery vessel between the hydrogen generator and the fuel cell for delivering a flow of hydrogen from the hydrogen generator to the fuel cell; a pressure sensor in the delivery vessel for measuring the pressure of the hydrogen; a first controller receiving input from the pressure sensor, and generating a hydrogen consumption control command; a current sensor for measuring the current produced by the fuel cell; and a second controller receiving input from the current sensor and generating a fuel supply control command, where the first controller is connected to the fuel cell to regulate the amount of hydrogen consumed by the fuel cell and the second controller is connected to the hydrogen generator to regulate the amount of hydrogen produced by the hydrogen generator.    DESCRIPTION OF DRAWING(S) - The figure shows a schematic illustration of a fuel cell system.    Control system (8)    Fuel cell (10)    Hydrogen generator (12)    Supply conduit (14)    Pressure sensor (16)    Purge valve (18)