Apparatus for controlling fuel cell vehicle

DRIVE December 11, 2002
Source

An upper limit amount of discharged electric energy calculator 53 calculates an upper limit amount of discharged electric energy (Pcap_LMT), which represents a discharged electric energy of a capacitor 3 when the amount of electric energy discharged by a fuel cell stack 2 is equal to an upper limit amount of electric energy (Ifc_LMT) generated by the fuel cell stack 2, based on an open voltage (Vcap_o) across the capacitor 3 and the upper limit amount of generated electric energy (Ifc_LMT). An output limit electric energy calculator 54 calculates an output limit electric energy (PLD), which represents an upper limit amount of the electric energy that can be outputted to a motor 10, based on the upper limit amount of generated electric energy (Ifc_LMT), the upper limit amount of discharged electric energy (Pcap_LMT), and an electric energy (Pload) consumed by electric accessories. A torque command determining unit 60 determines a torque command (TRQ_CMD) such that the electric energy consumed by the motor 10 and a motor driver 5 will not exceed the output limit electric energy (PLD).

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