Abstract: Systems and methods of controlling fuel cell electric power generation systems. In one embodiment, the control system comprises a current detector for measuring an output current of the fuel cell stack and generating a corresponding current signal, a flow detector for measuring a flow rate of a process gas stream and generating a corresponding flow rate signal, a sensor for measuring a concentration of a component of the reformate stream and generating a corresponding concentration signal, and a processor. The processor is configured to maintain hydrogen utilization in the fuel cell stack at about a user selectable value or within a user selectable range by generating an output signal as a function of the current signal, the flow rate signal and the first concentration signal. The output signal is employed in controlling a process variable impacting hydrogen utilization.

Abstract: Systems and methods for distributing hydrogen. A fuel is supplied in a pipe, and a stream comprising hydrogen is injected into the pipe. Hydrogen is extracted from the pipe downstream of the injection point.

Abstract: Systems and methods of controlling fuel cell electric power generation systems. In one embodiment, the control system comprises a current detector for measuring an output current of the fuel cell stack and generating a corresponding current signal, a flow detector for measuring a flow rate of a process gas stream and generating a corresponding flow rate signal, a sensor for measuring a concentration of a component of the reformate stream and generating a corresponding concentration signal, and a processor. The processor is configured to maintain hydrogen utilization in the fuel cell stack at about a user selectable value or within a user selectable range by generating an output signal as a function of the current signal, the flow rate signal and the first concentration signal. The output signal is employed in controlling a process variable impacting hydrogen utilization.