Fuel cell system
AssigneeHonda Motor Co., Ltd.
InventorsTomoyuki Inoue, Ryoji Sakai, Yuto Nakatani
Life of this patent
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Abstract
During startup of a fuel cell system, feed forward control is performed to increase the rotation number of an electric auxiliary device (compressor) to a modified steady state rotation number while maintaining a steady state rotation acceleration rate of the electric auxiliary device. In this manner, the overshoot amount is suppressed to an allowable overshoot amount. Otherwise, feed forward control is performed to increase the rotation number of the electric auxiliary device to a modified low steady state rotation number while maintaining a low steady state rotation acceleration rate. In this manner, the overshoot amount is suppressed to an allowable overshoot amount.
Claims7
A fuel cell system comprising:
- a fuel cell stack configured to perform power generation using a fuel gas and an oxygen-containing gas;
- an electric auxiliary device configured to provide the oxygen-containing gas for power generation operation of the fuel cell stack;
- an energy storage device configured to supply electric power to the electric auxiliary device;
- and
- a control device comprising one or more processors configured to execute computer-executable instructions stored in a memory,
- wherein the one or more processors are configured to execute the computer-executable instructions to cause the fuel cell system to:
- at the time of driving the electric auxiliary device by feed forward control during startup, determine whether an allowable discharge electric power of the energy storage device is not less than or less than a peak electric power generated using a target setting of a steady state electric power of the electric auxiliary device;
- if the allowable discharge electric power of the energy storage device is not less than the peak electric power, drive the electric auxiliary device using a target setting of a steady state operation rate to reach the steady state electric power;
- and
- if the allowable discharge electric power of the energy storage device is less than the peak electric power, drive the electric auxiliary device using a target setting of a low steady state operation rate to reach a low steady state electric power where the steady state electric power of the electric auxiliary device is decreased, so as to decrease the peak electric power to an allowable peak electric power which is less than the allowable discharge electric power.
Dependencies are inferred from the claim text.