METHOD FOR CONTROLLING FUEL CELL OUTPUT OF FUEL CELL HYBRID VEHICLE

摘要

PURPOSE: A method for controlling a fuel cell output of a fuel cell hybrid vehicle is provided to improve system efficiency and fuel efficiency by controlling the fuel cell output according the energy level stored in the charging unit. CONSTITUTION: A power system of a fuel cell hybrid vehicle includes a fuel cell(110) as a main power source and a storage unit(131) as an auxiliary unit. A power converter(121) and a direct connection switch(125) are arranged between the fuel cell and the storage unit. A converter controller(122) controls the driving of the power converter by sensing the output voltage of the power converter. The output of the fuel cell is controlled to a fuel cell generation stop mode, a fuel cell constant current operation mode, or fuel cell-storage direct connection operation mode.