POWER DISTRIBUTION METHOD FOR FUEL CELL HYBRID VEHICLE USING CURRENT CONTROL OF FUEL CELL

摘要

PURPOSE: A power distributing method for a fuel cell hybrid vehicle based on the current controlling of a fuel cell is provided to supply stably output by generating the current command value of the fuel cell based on torque varying compensating values. CONSTITUTION: Motor power compensating currents, battery SOC compensating currents, auxiliary machinery consumption currents, torque varying compensating values. The values are added to generate the current command value of a fuel cell. The voltage of the fuel cell is controlled to follow the current command value of the fuel cell. The motor power compensating currents are obtained based on an equation, I_FC_CMD0 = K_FC x K_P x P_MCU_CMD. In the equation, K_FC is the motor power compensating current conversion ratio to a battery SOC; K_P is motor power compensating current conversion ratio to motor required power; and P_MCU_CMD is the motor required power.