Fuel cell system

A fuel cell system comprising:

• a fuel cell stack;
• a first air supply device configured to supply air to the fuel cell stack;
• a second air supply device configured to supply the air to the fuel cell stack;
• and
• a controller configured to control operations of the first air supply device and the second air supply device,
• wherein the first air supply device has a characteristic that a degree of deterioration progresses more rapidly when supplying the air at a supply flow rate within a second range than when supplying the air at a supply flow rate within a first range;
• the second air supply device has a characteristic that a degree of deterioration progresses more rapidly when supplying the air at a supply flow rate within a fourth range than when supplying the air at a supply flow rate within a third range,
• wherein the controller is configured to:
• acquire a required flow rate of the air required by the fuel cell stack;
• determine, based on the required flow rate, the first range, the second range, the third range, and the fourth range, both a first supply flow rate of the air to be supplied to the fuel cell stack by the first air supply device and a second supply flow rate of the air to be supplied to the fuel cell stack by the second air supply device;
• and
• control, based on the first supply flow rate and the second supply flow rate, operations of the first air supply device and the second air supply device.