Patent ID: 7887958
Filing Date: 2011-02-15
Classification: H01M,Y02E,Y02P

Abstract:
1. A method for controlling the flow rate of feedstock delivered to a hydrogen-producing region of a hydrogen-producing fuel cell system containing a hydrogen generation assembly with the hydrogen-producing region that produces hydrogen gas from at least one feedstock, a feedstock delivery system that delivers a feed stream containing the at least one feedstock to the hydrogen-generation assembly, and a fuel cell stack that receives hydrogen gas produced by the hydrogen-generation assembly and produces an electrical output therefrom to satisfy at least a portion of an applied load, the method comprising: regulating, with a control system having a feed-forward control portion and a feedback control portion, the flow rate of feedstock to the hydrogen-producing region of the hydrogen generation assembly responsive at least in part to a demand for hydrogen gas by the fuel cell stack to satisfy the portion of the applied load, wherein the regulating includes cooperatively: