DISTRIBUTED CONTROL METHOD FOR FUEL CELL SYSTEM AND THE FUEL CELL SYSTEM OPERATED THEREBY

摘要

A distributed control method for a fuel cell system is disclosed. An auxiliary power source first provides power for a main control unit and a power management unit during the fuel cell system is turned on. The main control unit repeatedly receives status data of fuel cells from the power management unit or actively inquires of the power management unit to determine whether the fuel cell system is abnormal, and real-time regulates the system to maintain it in an optimal condition. The power management unit detects the status of the fuel cell using sensors, produces a corresponding status datum, and then feeds back the status datum to the main control unit. While the fuel cell system is turned off, fuels residual in flow channels of a fuel cell and un-drained products produced by the electrochemical reaction of a fuel cell are cleaned up, and the last status of the fuel cell before shut off is stored. According to the method, the main control unit and the power management unit keep being actuated no matter whether the fuel cell system is turned on or off. Therefore, the status of fuel cells is monitored continuously, securing the performance thereof.