Patent ID: 9105892
Filing Date: 2015-08-11
Classification: H01M,Y02E

Abstract:
1. A method for determining a current set-point for a fuel cell stack, said method comprising: a controller of a fuel cell system programmed to control the fuel cell stack by: estimating a power-current relationship curve of the fuel cell stack; providing parameters from the power-current relationship curve estimation; calculating a slope for the stack based on the life of the stack using the parameters from the power-current relationship curve estimation, wherein the slope changes as the stack degrades with time; calculating a change in current in response to a power request signal, stack voltage, stack current and the calculated slope; generating the current set-point based on the change in current; and recalculating the change in current and regenerating the current set-point based on the change in current, wherein the current set-point is continually regenerated over the life of the fuel cell stack such that oscillations in the current set-point caused by external voltage oscillations of the fuel cell stack are removed.