MAINTAINING PERFORMANCE OF A FUEL CELL POWER SUPPLY

摘要

An exemplary method of monitoring the fuel cell includes operating the fuel cell in an ohmic loss region of performance of the fuel cell. At least one characteristic of the fuel cell performance operating in the ohmic loss region is determined. An exemplary power supply unit includes a fuel cell and a controller configured to cause the fuel cell to operate in an ohmic loss region of the fuel cell performance in the absence of the fuel cell providing power to a load. The controller is configured to determine at least one characteristic of the fuel cell performance operating in the ohmic loss region.