초록 ▼

A power control system for controlling the supply of a reactant gas, such as air, for reaction within a fuel cell stack used to power, for example, a motor vehicle is set forth. The disclosed system may be used to reduce or eliminate compressor revving and instabilities common to prior systems in wh

A power control system for controlling the supply of a reactant gas, such as air, for reaction within a fuel cell stack used to power, for example, a motor vehicle is set forth. The disclosed system may be used to reduce or eliminate compressor revving and instabilities common to prior systems in which fuel cell power output is dependent upon a flow of a reactant gas through a fuel cell stack, the flow of reactant gas being determined by the compressor speed.

대표청구항 ▼

[ What is claimed is:] [2.] In a fuel cell system for a motor vehicle having electric powered systems, said fuel cell system having a compressor for supplying a gas for reaction within a fuel cell stack, a control system comprising:(a) power monitoring means for monitoring at least one signal compon

[ What is claimed is:] [2.] In a fuel cell system for a motor vehicle having electric powered systems, said fuel cell system having a compressor for supplying a gas for reaction within a fuel cell stack, a control system comprising:(a) power monitoring means for monitoring at least one signal component indicative of fuel cell power drawn by said electric powered systems of said motor vehicle;(b) gas flow calculating means for calculating a required gas flow to said fuel cell stack to provide power to said electric powered systems as measured by said power monitoring means;(c) gas flow monitoring means for monitoring gas flow to said fuel cell stack and comparing said monitored gas flow with said required gas flow to generate an error signal;(d) feed forward monitoring means for determining power demand status of said electric powered systems of said motor vehicle based on plurality of demand signals;(e) feed forward calculating means for calculating total power demanded by said motor vehicle based on correlating said demand signals monitored by said feed forward monitoring means with predetermined data for each of said electric powered systems, said predetermined data corresponding to power drawn by each of said electric powered systems in the state of said demand signals monitored by said feed forward monitoring means, said feed forward calculating means providing an output signal indicative of a calculated required gas flow to said fuel cell stack;(f) combining means for combining said error signal with said output signal of said feed forward calculating means to generate a gas flow signal for control of said compressor.