FUEL CELL SYSTEM

摘要

A fuel cell system that generates power by supplying anode gas and cathode gas to a fuel cell has a control valve that controls pressure of the anode gas supplied to the fuel cell, a pulsation operation unit that causes pulsation of pressure of anode gas in the fuel cell in accordance with a predetermined pressure by controlling an opening degree of the control valve based on an operating condition of the fuel cell system, and a stagnation point determination unit that determines, based on a change in the pressure of the anode gas in the fuel cell, whether or not a stagnation point exists where an anode gas concentration is locally low in the fuel cell. When the stagnation determining unit determines that the stagnation point exists in the fuel cell, the pulsation operation unit increases the predetermined pressure in execution of a pulsation operation.

主权项

1. A fuel cell system that generates power by supplying anode gas and cathode gas to a fuel cell, comprising:
a control valve that controls pressure of the anode gas supplied to the fuel cell; a pulsation operation unit that causes pulsation of pressure of anode gas in the fuel cell in accordance with a predetermined pressure by controlling an opening degree of the control valve based on an operating condition of the fuel cell system; and a stagnation point determination unit that determines, based on a change in the pressure of the anode gas in the fuel cell, whether or not a stagnation point exists where an anode gas concentration is locally low in the fuel cell, wherein, when the stagnation determining unit determines that the stagnation point exists in the fuel cell, the pulsation operation unit increases the predetermined pressure in execution of a pulsation operation.